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