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