1 hour 48 minutes 39 seconds. This time is posted and verified. The 1st place time belongs to FullyAutomato.
That time is a far cry faster than my recent 5+ hour hard difficulty single life run.
After I finish my Dying Light hardcore run, I will be doing this speedrun of Arkham Asylum, and I am stoked about it!
For more information on speedruns for Arkham Asylum, check out https://www.speedrun.com/arkhamasylum#No_Major_Skips.
HT Tinged Tugboat.