Here is the full list of all 44 Mommy achievements.
Read the last page of the comic.
Complete snowy land
Die from the avalanche
Use computer 20 times
Compete grassy land
Die from darkness
Kill 50 eyes in mini game
Use computer 10 times
Kill 20 eyes in mini game
Kill 10 eyes in mini game
Die from trap
Kill 5 eyes in mini game
Die from slime
Complete 30 levels in 5.0 mini game
Complete candy land
Die from the mutant-slime
Use computer 5 times
Complete 20 levels in 5.0 mini game
Complete 10 levels in 5.0 mini game
Complete 5 levels in 5.0 mini game
Die from frog
Use computer
Die from spike or from falling into the abyss