Here is the full list of all 20 Anime Hunter achievements.
Play for 8 hours
Launch 5000 dildos
Play for 4 hours
Play for 2 hours
Collect 10000 underwear
Defeat 1000 girls
Collect 1000 underwear
Play for 1 hour
Launch 500 dildos
Defeat 100 girls
Collect 100 underwear
Launch 50 dildos
Collect 10 underwear
Defeat 10 girls
Collect 1 underwear
Launch 5 dildos
Defeat 1 girl
Defeat 10000 girls
Launch 50000 dildos
Play for 16 hours