Full list of all 12 Super Meat Boy achievements worth 200 gamerscore. It takes around 25-30 hours to unlock all of the achievements on Xbox 360.
You got 100% on Super Meat Boy, start bragging!
You completed the Dark World... you are awesome.
You've beaten the Cotten Alley all by yourself!
You unlocked Tim by collecting 50 bandages! He's weird...
You conquered 5 warp zones! you're so old school...
You unlocked Commander Video! Double rainbow all da way!
You unlocked The Kid!
You beat the game!... but that's not the end, is it?
You unlocked Gish by collecting 10 bandages! Go you!
You completed a full chapter without dying! Good for you!
You just beat 10 levels without getting killed! Meat Boy loves you for that!
You found a warp zone! Now pay me for the door repair!