* AntiClimaxBoss:
** Shadow Man in the first Cossack stage. Your last [[spoiler:mandatory]] fight with him is also the easiest; you can easily rapid-fire him with your buster and he'll die in a few shots.
** The Chimerabots due to being fought in the final level. The lack of music prior to fighting them indicates that you're about to fight a suitably epic boss for a game as crazy as this, but instead you fight... hybrids of Robot Masters from the previous games. The Petit Robot Masters would also count (considering they are technically the final bosses) if the game didn't opt to end on an EscapeSequence instead.
* SugarWiki/AwesomeMoments: [[spoiler:Mega Man using Rush Cannon on Wily's saucer in the best ending (or ramming him with Hell Wheel in the normal one).]]
* BestBossEver:
** Pharaoh Man in his own stage, because it has two parts: one on the outside, and one inside the pyramid. At the end of the first part, he destroys the arena and starts the second part by [[TurnsRed turning red]], getting a health refill and becoming a berserker at the same time. The fight resumes, but you're under the curse of the pyramid.
** You get to fight ''[[Videogame/MegaManV Terra]]'', and you get to use his weapon!
** Shadow Man every time you fight him.
* BigLippedAlligatorMoment: Most of the Robot Master fights that aren't part of the main roster.
* BreatherBoss:
** Joe Ni-Nin Va All counts as one because Mega Man can bring in an Apache Joe chopper from the previous section and snipe him from a safe spot.
** Dr. Cossack as well, assuming you came into the fight with the Spark Chaser. If you didn't, prepare yourself for a rough fight.
*** [[AvertedTrope Averted]] in The Mechanical Arena, as you cannot bring in an Apache Joe chopper or the Spark Chaser for each respective battle, forcing you to rely on your default weapons.
* ComplacentGamingSyndrome: The constant use of Hell Wheel is guaranteed. The fact that [[spoiler:you use it in the final chase of the game doesn't help]]. Interestingly, the Hell Wheel was far more broken in early builds of the game than in the current release, able to one-shot most enemies. While it isn't a GameBreaker anymore (using it in the wrong places is a good way to drain your health), it remains the go-to weapon for Speed Runners.
* EndingFatigue:
** [[spoiler:No fewer than ''three'' "final bosses", ''and that still isn't the end of the game''.]]
** The credits sequences (yes, as in plural) are much more elaborate and extensive than you'd expect from an NES game, let alone a ''Mega Man'' one. In total, they clock in at almost '''ten minutes''', which is insane for an NES game.
* SugarWiki/FunnyMoments:
** [[spoiler:[[ForegoneConclusion Wily escapes]] even in the best ending, using one of the enemies to carry him off... But it drops him, and then picks him up again. Mega Man sighs.]]
** [[spoiler:The final boss fight. After Mega Man disables the alien hologram, Dr. Wily hastily modifies the projector and tosses it at Mega Man, which makes him lose all his weapons and creates the Petit Robot Masters, who themselves are humorous in their manner of attacking all at once.]]
** [[spoiler:In the normal ending, Wily begs for mercy at Mega Man like usual. In the best ending, however, Wily ends up begging for mercy at ''Rush''.]]
** [[spoiler:Defeating Super Shadow Man will make him appear in the ending, in which he glides along with his ninja kite... then loses control of it and spins out of sight. He shows up later still spinning and reveals ''Top Man'' tangled to his kite string.]]
* GameBreaker:
** Hell Wheel allows you to speed through the stages, and in earlier versions, it could kill almost every enemy. Use this in Wily Stage 2 and the whole first half (except for the [[BossInMookClothing Jumbigs]]) is an entire joke. Many people doing playthroughs tend to use this ability.
** Recycle Inhaler can destroy almost every enemy in one hit and it makes powerful items. In LetsPlay/{{Raocow}}'s words, it'll DUST THEM UP!
** Water Cutter is basically a way faster version of the already-overpowered Metal Blade and has near infinite ammo.
* SugarWiki/GeniusProgramming: The game runs on an [=MMC5=] mapper, which allows for a much larger amount of content compared to vanilla [=MM4=].
%%* GoodBadTranslation
* HilariousInHindsight:
** The Mechanical Arena is supposed to be a reference to the Arenas in the Kirby games. However, the first arena is in a fixed order (Robot Masters by DWN, Fortress Bosses, Dr. Wily), while the Arena in the Kirby games were in a random order with the exception of the final bosses. However, [[VideoGame/KirbyPlanetRobobot Kirby: Planet Robobot]] has a mechanical theme and its Arena is not only mechanically themed itself, but every single boss fight (including the True Arena) are in a fixed order. Therefore, it is literally a Mechanical Arena.
** Near the end of the game, [[spoiler:Mega Man ends up going through a fleshy WombLevel, although it turns out to be fake in the end]]. In ''[[VideoGame/SuperSmashBros Super Smash Bros. for Wii U]]'', [[spoiler:in Classic Mode on the hardest intensities, Mega Man goes through a WombLevel for real in the form of Master Fortress]].
* {{Narm}}: Most written text comes off as this thanks to GoodBadTranslation.
--> '''Kalinka:''' I suppose I put it on the doggy. ...All OK.
* NarmCharm: Despite the above, it's not considered a TranslationTrainWreck but rather simply amusing.
* ShockingMoments: Those used to Toad Man's and Dust Man's canon BreatherBoss status may take on them first...only to get turned into a frog or E-Tank respectively.
* ThatOneBoss:
** Toad Man and Dust Man have [[TakeALevelInBadass taken a level in badass]].
*** Toad Man's movements are now erratic and rapid. He'll jump if you try to shoot him or get close to him. Watch out if he hits you with his rain attack; he'll [[ForcedTransformation turn you into a frog]] and attempt to squish you.
*** Dust Man can heal himself with your attacks (except Toad Spell) when he [[WeaponsThatSuck sucks in his debris]]. If he sucks you up, he turns you into an E-Tank. Mash the buttons quickly or he will give you a OneHitKill by booting you into the incinerator.
** Skull Man. If you don't have Water Cutter [[note]]Though not his weakness, it can be useful on him, as it tears through his invincibility frames[[/note]], you're gonna be dying to him a lot. He spends most of his time using Hell Wheel, which he can use to bounce off ramps and climb up the walls. He barely uses his buster, but that's the only good time to hit him.
** Mothraya is a nasty boss to lead you into the fortress stages, being fought at the end of the first one's UnexpectedShmupLevel. It fires huge amounts of bullets from all points on its body, and [[CognizantLimbs its eyes and drill must be destroyed]] to stop its nastiest attacks. It's entirely possible to get knocked off of Rush Jet and die to the pit at the bottom of the arena if it hits you at a bad time. Mothraya's bad enough on Normal difficulty, but Hard turns it into a complete nightmare; not only does it fire stronger bullets in trickier patterns, but it has a LastDitchMove that can potentially finish you off even after you've killed it.
** The Wily Capsule. It fires [[BulletHell many, many, many lasers]] in seemingly random patterns. And to rub salt into the wound, it never stops shooting while on its last legs. Good luck no-hitting this boss!
* ThatOneLevel:
** Skull Man's level is made up of various platforms from the ''Mega Man'' classic series over very large BottomlessPits. Beat can make it a little easier.
** The curses in Pharaoh Man's stage can be a pain the ass, especially the Roulette Curse.
** Wily Stage 2... with two Jumbigs.
** Wily Stage 4 is not a cakewalk like it was in the original ''Mega Man 4''. First, you have to fight three Chimerabots which are hybrids of some of the most annoying boss combinations possible (Cut Man with Elec Man's speed and attack pattern, Wood Man with Quick Man's spastic speed and less frailty, and Needle Man with Gemini Man's cloning ability [[spoiler:or Super Shadow Man]]). After beating the third Chimerabot [[spoiler:or Shadow Man]], you fight the Wily Capsule. Final boss, right? NO. [[spoiler:You then go through a creepy underworld-like level with bubbly enemies that are hard to kill with any weapon. Getting around is also hard without dying]]. Fortunately, [[spoiler:the true final boss in the game right now isn't hard, thanks to the EleventhHourSuperPower Proto Man eventually gives you]]. After [[spoiler:defeating ''that'' final boss, you then go through an EscapeSequence segment where you have a limited amount of time to escape the exploding Wily Castle using Hell Wheel]]. Then after that, you're ''finally'' done.
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