Average Playtime: 6 hours

Batman: Arkham Asylum Game of the Year Edition achievements

7.55%
Perfect Knight
7.93%
Freeflow Gold
8.45%
Predator Gold
8.90%
Freeflow Perfection
8.98%
Predator Silver
9.05%
Freeflow Silver
10.72%
Freakshow Rodeo
12.04%
Invisible Predator
12.12%
Predator Bronze
12.27%
Freeflow Bronze
12.94%
Biggest Bang
16.53%
Mano-a-mano