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