History YMMV / MegaMan4

* GameBreaker: [[GameBreaker/MegaMan Shares a page with the rest of the franchise.]]

* GameBreaker:
** This game's charged Mega Buster has widely been accused of being overpowered, for doing nearly as much damage to a boss as their weakness. While this was likely done in response to the previous game, where taking on a Robot Master without their weakness tended to become a brutal slog where you had to chip away each and every one of their hitpoints while they could easily kill you with about 4 or 5 hits, half of the fanbase didn't actually have a problem with that, and the other half thought this game's solution went too far in the opposite direction. Aside from the Game Boy ''VideoGame/MegaManIII'', this version of the Mega Buster would never appear again in the series and would be relegated to Proto Man's buster in ''VideoGame/MegaMan9''.
** While limited by energy, the Pharaoh Shot uses the ChargedAttack mechanic of the Mega Buster and can give you two shots for the price of one; a sun-like orb is generated above Mega Man and enemies colliding with it may deplete it, but you can still fire off a second sun orb like a projectile, for major damage. Like the Metal Blade, you can even aim the shots in multiple directions, similar to the Metal Blade, except for upward.

* ScrappyWeapon: While the other Special Weapons are all useful in some manner, the Skull Barrier is pretty much worthless, since it vanishes after being shot/striking an enemy once, making it useless as a shield. Even worse, Dive Man, the Robot Master who is weak to this weapon, requires you to be close to him in order to hit him with it. He also has an attack that lets him move really fast. And touching him knocks off a large chunk of your health. Both the Dust Crusher and Mega Buster are slightly less damaging but do a better job of eliminating the [[HomingProjectile Dive Missiles]]. In other words, the Skull Barrier's more trouble to use than it's worth. If nothing else, it's very energy-efficient compared to the other shields, so while it only blocks one shot, it can block one shot a lot. The one practical use it ostensibly gets is in Drill Man's stage, to protect Mega Man from falling rocks. Even then, the Pharaoh Shot does a better job, as the projectile forms overhead and remains there until Mega Man fires, all while it protects against all damage from above without disappearing.

** Fans love taking Dr. Cossack's GloriousMotherRussia aspects and cranking them UpToEleven. The fact that his SupervillainLair resembles features of the Saint Basil's Cathedral doesn't help.

** Skull Man and Pharaoh Man have quite a few fans, thanks to their character designs and [[SugarWiki/AwesomeMusic excellent stage music]]. Pharaoh Man got a massive boost thanks to his [[WesternAnimation/MegaMan Ruby-Spears]] counterpart's badass voice, design, and [[MemeticMutation him not taking Mega Man's shit]]. The Pharaoh Shot is also one of the best robot master weapons in the game.

** Dive Man is notable as a boss that is extremely easy if you know how he works, but a nightmare if you don't. As long as you stay on the other side of the room from him, simply spamming the Mega Buster will destroy his missiles and damage him in the process with little risk, and it's fairly easy to jump to the opposite side when he does his charge. Try to fight him at close range, or fail to escape him? Then he's an absolute nightmare who will try to ram you to death with surprisingly high damage, both incredibly aggressive and rather hard to get a bead on. What puts him here, though, is that his weakness, Skull Barrier, ''requires'' you to try to get close to him, meaning people trying to use his weakness on him will have a much tougher time.

** Toad Man is a special kind of pathetic; he can be looped into an infinite pattern where he does nothing but jump. Alternatively, one can wait and shoot him once his [[MercyInvincibility invincibility frames]] wear off. He'll be locked into a vicious cycle where he just stands perfectly still and futilely tries activating Rain Flush, only to be interrupted each time.

** Pharaoh Man is very easy if you use his weakness to continually freeze him in place.

* BreatherLevel: Pharaoh Man is by far the easiest level since there are no mini-bosses and the enemies are relatively easy to defeat.

** Ring Man's stage can be very difficult due to having numerous instant-death hazards, troubling enemy placement, and ''four'' {{Mini Boss}}es. It's even worse if you're trying to clear it without taking damage and limiting yourself to just the Mega Buster, as LetsPlay/RoahmMythril has done (with an effect on his sanity). Ring Man himself is no pushover either if you don't know how to deal with his attack patterns.