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