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