Here is the full list of all 32 Nom Nom Apocalypse achievements.
BEAT THE GAME WITHOUT USING PERKS
PURCHASED ALL PERKS
KILL 50 MUTANTS WITH KNIFE THROW
BEAT THE GAME FOR THE THIRD TIME
PURCHASE 25 PERKS
BEAT THE GAME FOR THE SECOND TIME
KILL 10 NOMMEGAS
BEAT THE GAME. STOP THE APOCALYPSE
KILL 100 MACARON MUTANTS
PURCHASE 10 PERKS
KILL 50 FROZEN MUTANTS
KILL A NOMMEGA WITHOUT TAKING DAMAGE
KILL 100 PIZZA MUTANTS
KILL 100 CHEESE BURGER MUTANTS
KILL 100 LOLLY MUTANTS
BEAT LEVEL 3 WITH 1 OR LESS PERKS
KILL A BOSS WITH KNIFE THROW
GET A KILL STREAK OF 50
GET A SCORE OF 500000 OR MORE
KILL 4 BOSSES IN A RUN
BEAT A LEVEL WITHOUT TAKING DAMAGE
KILL A BOSS WITHOUT USING SPECIAL POWER
KILL A BOSS WITHOUT TAKING DAMAGE
GET A KILL STREAK OF 40
GET A KILL STREAK OF 30
KILL 50 MUTANTS ON FIRE
GET A SCORE OF 100000 OR MORE
BEAT A LEVEL WITHOUT USING SPECIAL POWER
GET A KILL STREAK OF 20
KILL A MINI BOSS WITHOUT TAKING DAMAGE
GET A KILL STREAK OF 10
COMPLETE BASIC TRAINING