Here is the full list of all 12 Zombeer achievements.
Find all the developer diaries
Find all the "Men in thongs" figures
Find all the cover pages of Jessica
Find all the collectibles
Complete the game without getting drunk or zombified
Complete the game using only the dildo
Finish the game on Normal difficulty
Complete the game on Hard difficulty
Finish the game on Easy difficulty
Get all the sniper rifle parts
Crush the president in the stadium
Grind up three zombies in the turbine