[quote name='Flak']The Mother Brain fight in Zero Mission is
ing me over. And I'm only on normal. I could draw the game over screen, pixel for pixel I've seen it too many times.[/QUOTE]
I actually beat Mother Brain on Hard on a 10% under two hour run. Now THAT was brutal
The easiest way is just to freeze the projectiles and use them to your advantage. Remember how many shots it takes to destroy them, use them as additional platforms, only destroy one at a time, and NEVER, EVER, drop below your main platform. That will always trigger mother brain to use her beam attack. Oh yea, there's also a point where either three missiles or 1 super missile will initiate the beam attack, just hit her with two missiles and then tag her with one Super Missile, it's the most effective damage output
You know what else is hard? Fighting the Mecha Boss at the end on a 100% Hard run. Takes twice as many hits to kill and does double the damage >.>
Not only that, then you have to take on the two black bastards at the end. Of course, that's easy if you can use the ledge trick (makes them climb up to the edge, jump away for no reason, and repeat. Target Practice).
The game is REALLY fun though, I honestly like it better than any other Metroid game. It controls really well and runs smooth, the secrets and hidden routes allow you to complete the game in several fashions and makes for some interesting speed runs.