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