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