Batman: Arkham Asylum (PC) - Combat Challenge - Sewer Bat (Extreme) (139760) Full No Damage Walkthrough Guide in Full HD (1080p) and 60 fps on PC br br =================================== br br COMBAT MEDAL CHALLENGES: br br ● 1 Medal - 10000 br ● 2 Medals - 30000 br ● 3 Medals - 50000 br br =================================== br br Game: Batman: Arkham Asylum (2009) br Platform: PC br Developer: Rocksteady Studios br Publisher: Eidos Interactive, Warner Bros.