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