Here is the full list of all 20 Hentai Loli vs Pedobear achievements.
Cleaner
Assassin
Soldier
Sniper
LaraCroftova
PedoBearKiller
Deadly
Find Forest
Find SkyScraper
Sharp
Find Factory
Precision
Find Airport
Sheriff
Find Bridge
Gunslinger
Find Stadium
Find Tram
Tough
Find Downtown