Here is the full list of all 10 Hentai vs Evil achievements.
Save a girl from the cage
Kill 50 evil pigs
Kill 50 reapers
Kill 250 zombies
Cause 30000 damage in one game
Stay alive 5 minutes in "Survive" game mode
Destroy 30 bonus boxes
Kill 100 enemies in one game
Find soda in the Town level
Find parrot in the Pirate bay level