You finally gained entry to the forbidden Island CX. You fight your way through the island fortress to the emperor who has been hyped up to be a major Big Bad of the game...only to realize he doesn't have an actual Boss Battle and takes only a single (or two) hits before succumbing to a Plotline Death to pull the lever that starts up the Emerald Moon Reactor.
Funfrock, the true Big Bad of the game, can end up as this in the final battle if the player chooses to use the Ring of Lightning. Yes, it DOES indeed one-hit-ko the final boss of the game.
Awesome Music: Both Relentless and Twinsen's Odyssey have really nice and memorable soundtracks.
Disappointing Last Level: The final area you fight through in Relentless. Not so much the final confrontation with Funfrock, but the path leading up to it after destroying the cloning facility is pretty dull. It's just a long boring mining road which includes one particular rage enducing point where you have to get by an invulnerable Dirt Excavator enemy with absolutely no room to work with.
Fanon: A vast majority of people believe that The Voice Twinsen hears when he grabs the Wannie Key Fragment is the true Dark Monk of Zeelich.
Game-Breaker: Magic spells in the second game breaks it in half with no shame. It might be the reason why the Big Bad is so damn set in getting it!
The Ring of Lightning in the second game when used as a weapon is so overpowered it can One-Hit Killthe final boss of the game.
The Protection Spell is just as overpowered if you choose to grab it from it's Bonus Dungeon. If you're quick enough at killing your enemies, you could possibly complete the game without ever taking any damage if you always keep your mana up.
Aggressive stance with the sword. Never miss a swing and you basically have your enemy stun-locked.
Gameplay Derailment: In the Desert Island theme park, there's a small raised land area that Twinsen can use to jump off from to get into the hole for the money reward without having to complete the duck shooting game.
For the first game, the fact you were able to hurt yourself by running into things in the Sporty stance was a pain for a lot of players.
For both games, knock-back is an huge annoyance since it's possible to get stuck in a never ending knock-back loop until your eventual death.
Aggressive stance's attacks leave a bit to be desired. Twinsen can either throw a quick punch or wind up a slow kick which leaves him wide open to retaliation and, as stated above, some enemies can put Twinsen in a long loop of damage and pain.
Sweet Dreams Fuel: The series has a very "feelgood" feel to it. There are dark moments though.
That One Boss: The flying seal on Mosquibee island. You have to use a leather baseball glove to throw back the fireballs the seal spits at you. And you have to use a precise angle to make it work.
The final grueling walk down the mining road before confronting Funfrock in Relentless. The Dirt Excavator that is almost impossible to bypass gets on almost everyone's nerves.
On the topic of the original game, The Temple of Bu walkthrough can really tick people off due to the feeling of Check-Point Starvation. People are forced to complete entire sections of the temple without the ability to save part way through, and will end up losing all their hard work going through the temple layouts if they die. Switching between the temple's layouts is the only way to save the work going through the temple.
The Island of the Volcano, with lava galore in Twinsen's Odyssey. Thankfully, it is only optional.
Inside Dark Monk's Statue, the final level of the second game. One particular type of enemy will fire rockets that hits for a ton of damage while another is very tanky. If you think you can just hack and slash your way through you're in for a rude awakening here, Ring of Lightning can only help you so far since the level is somewhat long and if you waste it you won't have any magic for the final boss.
Tier-Induced Scrappy: Sword combat actually has 4 distinct types of gameplay connected to Twinsen's 4 mood stances. However, the aggressive stance is the only mood players ever rely on and is ''quite'' overpowered if the player never misses a swing; leaving the other 3 sword moods in the dust. The lone exception being the sporty stance when people wanna fool around with its front-flip attack which is Twinsen's most powerful sword swing which doesn't offer much since you can pull off the same damage, if not MORE, in the same amount of time with the aggressive stance.