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