History YMMV / PokemonRumble

** In ''World'', the aforementioned "Restaurant Opening" challenge from above is no joke. It's a surprisingly hard EscortMission where you have to protect your Mii while be under the unforgiving time limit. The enemies are GenreSavvy to beat up your Mii, while it was just standing around like a sitting duck, forcing you to fight groups of enemies while pushing the Mii away from their attacks. Not only that but you will be outnumbered if you don't kill them right away and you have to fight like 2 sub-bosses, Sceptile and Tauros, traps, small castles that make more enemies appear, cannons that can lower your speed if you got hit, bombs falling from the sky, and freeze cannons that can and will make you Frozen, before reaching to the end of the level. [[ThatOneBoss Slurpuff]] and the Swirlix horde are annoying to fight as the former heals itself after attacking while the latter spams Attract at you, preventing you from attacking as well, making you wasting all the time you need. Good luck, you gonna need it!

** The "Dark Four" challenge, also in ''World''. Even if you have a high enough Power Level so that most of the Mooks are easy to KO, there's still one problem: Your Mii. Like before, getting your Mii [=KO'd=] is an instant loss, but at least before you could try pushing them out of harm's way. Here your Mii is even more of a sitting duck than they are in the "Restaurant Opening" challenge as they stand frozen in place (with you unable to move them at all) in the center of the two arenas unable to do anything but toss buffs, and of course all the enemy Pokemon go after them instead of you. Even you you somehow manage to move your Mii, they will instantly be teleported back to the center of the arena into harm's way. Think that's bad enough? The final boss of this challenge is Yvetal, who will happily ignore you in favor of your Mii, who in their frozen spot is just within range to be hit by Oblivion Wing. At that point it's pretty much a race to KO Yvetal before he completely drains your Mii's health bar, which will likely already be a good ways down from everything you faced before. (And Oblivion Wing restores Yveltal's health, too.) To top it all off, unless you're really fast, fulfilling all of the challenge's bonus conditions in one go is next to impossible. (Clear the battle in 180 seconds ''while also'' not destroying any forts, which means waiting for all the forts to empty out their Pokemon. It doesn't help that there's a several-second long delay between defeating one wave and the fort spitting out the next one, and the Joltik/Galvantula ones have about 5 or 6 waves apiece.)

** The "Dragon Marshal Advance" challenge in ''World''. Have fun fighting a multiple hordes of enemies, and then fighting several Mega-Evolved Pokémon that are all backed up by their own small armies of endlessly-respawning enemies! Granted, you can destroy the towers to make the respawning stop, but it unfortunately eats up time and leaves you open to attack.

* ThatOneLevel: In general, the Battle Royales have you fighting waves after waves of enemies that always like to ZergRush you if you didn't act fast and the battles are TimedMission here.

* NightmareFuel: ''Rumble Blast's'' final boss, which [[spoiler:is a rusted key that controls Pokemon]]. Despite [[spoiler:not being a Pokemon]], it gets its own cry!

** The "World Championship" challenge. Be on the lookout for: Venusaur's Solar Beam that stuns you, Chesnaught's Spiky Shield that cuts down about a third of your health when hit, Swampert's Muddy Water that lowers your Hit Ratio, Empoleon's Whirlpool which traps you and leaves you vulnerable to being ganged up on, Charizard's Fire Blast that really hurts (and has a pretty good chance of burning you), and Delphox's Mystical Fire which renders your attacks ineffective. Now factor in trying to dodge all of these attacks at the same time, multiply by all the other Pokémon trying to murder you while you run circles around the battlefield, and add the final boss as the icing on the getting-your-butt-kicked cake: ''Mewtwo.'' Have fun.
** 'World Championship X', which appears in the post game, is a living hell. Enemy Pokémon with insane attack and defense, status-inflicting moves, so fast you have next to no time to swap out. To further make it harder, it has the usual 'don't swap out' rule, as well as trying to clear it in 220 seconds and clearing it with only ''Pikachu''. Good luck - you're REALLY going to need it!

*** Slurpuff, armed with a swarm of infinitely respawning Swirlix that use Attract (which homes in, stuns you every time one hits you and destroys your attack power) and a move that can regenerate its health. Then factor in the time limit when facing it in the "Restaurant Opening" challenge. And if you thought that was annoying, wait until you're trying to ''catch'' it.

** The "Dragon Marshal Advance" challenge in ''World''. Have fun fighting a multiple hordes of enemies, and then fighting several Mega-Evoloved Pokémon that are all backed up by their own small armies of endlessly-respawning enemies! Granted, you can destroy the towers to make the respawning stop, but it unfortunately eats up time and leaves you open to attack.

*** Manaphy. It's main annoyance is Aqua Ring, which heals her by significant amounts, and it actually ''waits'' until Aqua Ring is over to use it again. Like Sylveon, however, this essentially gives it infinite health, giving you an infinite time to wobble it.

*** Zekrom moves incredibly fast and hits like a truck when using one of his two moves, making it difficult to catch up with him in the cool-down phase as he can rocket to the other side of the arena, and will be out of the cool-down phase by the time you reach him. The arena is also crawling with Gothielles that can trap you into a CycleOfHurting that can kill you in five seconds if you let them.
*** When it comes to capturing boss-Pokemon, Meinshao makes one of the most difficult captures of the game. It's impossible to wobble because it uses Protect (which makes Pokemon invincible in the ''Rumble'' games) right before it goes into its cooldown phase, rendering it impossible for you to score any hits on it. Your only hope in capturing it is to hope it's sparkling when you meet it or just cross your fingers when you defeat it.

** When it comes to capturing boss-Pokemon, Meinshao makes one of the most difficult captures of the game. It's impossible to wobble because it uses Protect (which makes Pokemon invincible in the ''Rumble'' games) right before it goes into its cooldown phase, rendering it impossible for you to score any hits on it. Your only hope in capturing it is to hope it's sparkling when you meet it or just cross your fingers when you defeat it.

** Slurpuff in ''World'', with a swarm of infinitely respawning Swirlix that use Attract (which homes in, stuns you every time one hits you and destroys your attack power) and a move that can regenerate its health. Then factor in the time limit when facing it in the "Restaurant Opening" challenge. And if you thought that was annoying, wait until you're trying to ''catch'' it.
** Sylveon, also in ''World'', is an odd example due to its flunkies being Audino. Audino's sole "attack" is that it heals the area around it, making Sylveon a pain in the ass if you're using something that only has close range attacks and you neglect to take out the Audino first. ''However'', this also makes Sylveon the easiest (albeit tedious) toy to collect, since it has essentially unlimited health, allowing you an infinite amount of time to attempt to wobble it for a guaranteed capture.
** Lugia, yet again in ''World''. Combine the fact that it boosts its Attack and Defense and the accompanied Octillery use Octazooka to lower your hit ratio (in other words, making all attacks take longer to execute)... Good luck trying to catch it.
** Once again in ''World'', we have Manaphy. It's main annoyance is Aqua Ring, which heals her by significant amounts, and it actually ''waits'' until Aqua Ring is over to use it again. Like Sylveon, however, this essentially gives it infinite health, giving you an infinite time to wobble it.
** In terms of catching Pokémon, Aegislash. Slow to get to because of a balloon that takes five hours to refill, a one-in-five chance of landing on it without gems, and a requirement of at least two stars, but that's comparable to many tougher Pokémon. The problem is that thanks to its stance shift, it never goes into a cooldown phase and therefore cannot be wobbled. At all. Expect to make many attempts before one of them deigns to sparkle or come along quietly. As a final kick in the pants, it doesn't even appear as a normal enemy in the Special version of the area it appears in, so if you thought you could just wait for it to show up there and then catch it that way, you're out of luck.
** Xatu in ''World.'' Its primary mode of attack is Future Sight, which appears as a giant ring of black smoke that dishes out an insanely high amount of damage and has a radius that covers almost the entire field, and it also likes to send out Confuse Ray, meaning that a confused Pokémon can easily waste valuable time (often, right when Xatu is in defenseless "white smoke" mode) or stumble straight into the Future Sight attack and get one-shotted, wasting diamonds or a balloon trip. The only way to stay alive is to hide in the circular field's outer ring, which makes predicting attack patterns harder, because the game's camera design means you can't see Xatu without getting up close, which often means getting killed.
** Reshiram in ''World'' uses Blue Flares that hit very hard and home in on your every movement. You'd best be standing far away from those things when they start to fire if you don't want to get barbecued; get hit by one and the rest will follow in quick succession.
** Also in ''World'', Zekrom moves incredibly fast and hits like a truck when using one of his two moves, making it difficult to catch up with him in the cool-down phase as he can rocket to the other side of the arena, and will be out of the cool-down phase by the time you reach him. The arena is also crawling with Gothielles that can trap you into a CycleOfHurting that can kill you in five seconds if you let them.

** The "World Championship" challenge. Be on the lookout for: Venusaur's Solar Beam that stuns you, Chesnaught's Spiky Shield that cuts down about a third of your health when hit, Swampert's Muddy Water that lowers your Hit Ratio, Empoleon's Whirlpool which traps you and leaves you vulnerable to being ganged up on, Charizard's Fire Blast that really hurts (and has a pretty good chance of burning you), and Delphox's Mystical Fire which renders your attacks ineffective. Now multiply that by a zillion, factor in all the other Pokémon trying to murder you while you run circles around the battlefield, and add the final boss as the icing on the getting-your-butt-kicked cake: ''Mewtwo.'' Have fun.
** 'World Championship X', which appears in the post game, is a living hell. Enemy Pokémon with insane attack and defense, status-inflicting moves, so fast you have next to no time to swap out. To further make it harder, it has the usual 'don't swap out' rule, as well as trying to clear it in 220 seconds and clearing it with only '' 'Pikachu'''. Good luck - you're REALLY going to need it!

** The "World Championship" challenge. Be on the lookout for: Venusaur's Solar Beam that stuns you, Chesnaught's Spiky Shield that cuts down about a third of your health, Swampert's Muddy Water that lowers your Hit Ratio, Empoleon's Whirlpool which traps you and leaves you vulnerable to being ganged up on, Charizard's Fire Blast which ''really hurts,'' and Delphox's Mystical Fire which renders your attacks ineffective. Now multiply that by a zillion, factor in all the other Pokémon trying to murder you while you run circles around the battlefield, and add the final boss as the icing on the getting-your-butt-kicked cake: ''Mewtwo.'' Have fun.

** The "Dragon Marshall Advance" challenge in ''World''. Have fun fighting a multiple hordes of enemies, and then fighting several Mega-Evoloved Pokémon that are all backed up by their own small armies of endlessly-respawning enemies! Granted, you can destroy the towers to make the respawning stop, but it unfortunately eats up time and leaves you open to attack.

** Slurpuff in ''World''. With a swarm of infinitely respawning Swirlix that use Attract (which homes in, stuns you every time one hits you and destroys your attack power) and a move that can regenerate its health, and then you factor in the time limit when facing it in the "Restaurant Opening" challenge...

** In terms of catching Pokémon, Aegislash. Slow to get to because of a balloon that takes five hours to refill, a one-in-five chance of landing on it without gems, and a requirement of at least two stars, but that's comparable to many tougher Pokémon. The problem is that thanks to its stance shift, it never goes into a cooldown phase and therefore cannot be wobbled. At all. Expect to make many attempts before one of them deigns to sparkle or come along quietly. As a final kick in the pants, Aegislash does ''not'' appear as a normal enemy in the Special version of the area it appears in, so if you thought you could just wait for it to show up there and then catch it that way, you're out of luck.

** In terms of catching Pokémon, Aegislash. Slow to get to because of a balloon that takes five hours to refill, a one-in-five chance of landing on it without gems, and a requirement of at least two stars, but that's comparable to many tougher Pokémon. The problem is that thanks to its stance shift, it never goes into a cooldown phase and therefore cannot be wobbled. At all. Expect to make many attempts before one of them deigns to sparkle or come along quietly.

* SoOkayItsAverage: The games was given average reviews by critics. They generally praise Pokémon collecting but criticized the game play and Pokémon models reused from ''VideoGame/MyPokemonRanch''.

** Reshiram in ''World'' uses Blue Flares that hit very hard and home in on your every movement. You'd best be standing far away from those things when they start to fire if you don't want to get barbecued, because if you get hit by one, the rest will follow it.

** Xatu in ''World.'' Its primary mode of attack is a giant ring of black smoke that dishes out an insanely high amount of damage and has a radius that covers almost the entire field, and it also likes to send out Confuse Ray, meaning that a confused Pokémon can easily waste valuable time (often, right when Xatu is in defenseless "white smoke" mode) or stumble straight into the black smoke and get one-shotted, wasting diamonds or a balloon trip. The only way to stay alive is to hide in the circular field's outer ring, which makes predicting attack patterns harder, because the game's camera design means you can't see Xatu without getting up close, which often means getting killed.

* ThatOneLevel: In general, the Battle Royales has you fighting waves after waves of enemies that always like to ZergRush you if you didn't act fast and the battles are TimedMission here.

* AwesomeButImpractical: The special trait Steady. It {{No Sell}}s any stat changes, ''including friendly ones'', making stat-boosting or health restoring moves pointless. In ''World'', even the items the Miis use on your Steady toy when they tag along will be for naught. Subverted if paired up with a move that normally decreases the toy's own stats, like Close Combat or Overheat, as the stat drop is negated due to the special trait.

* DemonicSpiders: Electric-type Pokémon in general in ''World'', mainly due to the fact that they can reliably inflict paralysis. Unlike the main series games, paralysis ''completely'' immobilizes your Pokémon, giving everything in the vicinity a chance to wail on you. And since everything seems to [[CycleOfHurting come in packs...]]

* AwesomeButImpractical: The special trait Steady. It {{No Sell}}s any stat changes, ''including friendly ones'', making stat-boosting or health restoring moves pointless. In ''World'', even the items the Miis use on your Steady toy when they tag along will be for naught.
** AwesomeYetPractical: However, if paired up with a move that normally decreases the toy's own stats, like Close Combat or Overheat, Steady becomes this, as the stat drop is negated due to the special trait.