I got Missile Boy today. It was so difficult! D:
I spent 8 hours on it this weekend. But I practiced at least another 8 hours a while ago spread over multiple sessions.
I've got Demon, Zombie, Fetus, Maggot, Girl and Impossible Boy left.
I think I might be able to do Demon, Maggot and Dr. Fetus Boy... but after that I think it's gonna be too difficult :/
a few days ago I got Dr. Fetus boy, didn't very long compared to the other achievenents.
And I unlocked Demon Boy a few minutes ago! :D
next up: Maggot Boy