Batman Arkham City | "Natural Selection" Challenge Map (read description)

This is a stealth walkthrough of the one of many Batman Arkham City challenge maps - "Natural Selection" (Museum).
Disabling HUD via console command absolutely broke some UI elements... and the timer for some reason. That's why challenge time is 0:00.
I have to mention that I took inspiration from ‪@thevideogamejunkie‬'s stealth videos - he's way good at Batman Arkham series.
#stealth
#batmanarkhamcity