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