Batman - Arkham Asylum [PC] walkthrough part 22

Points of reference:
00:30 - Riddler trophy
00:58 - Easter egg (secret hidden room)
04:19 - Interview tape
04:29 - "Is the generosity of our benefactors on the Wayne?"
04:50 - Arkham chronicle
05:33 - Riddler trophy
06:22 - Arkham chronicle
07:34 - Riddler trophy
08:30 - The last missing Joker teeth
08:42 - Riddler trophy
10:06 - "Are you going to take your hat off to Harley, Bats?"
10:51 - Riddler trophy
11:29 - Interview tape
13:13 - Interview tape
16:48 - Arkham chronicle
17:57 - Deactivating the gas
18:24 - Riddler trophy (and tracing Riddler's location)
18:58 - "Prometheus, Arkham guards' most wanted and most hated."
19:17 - Arkham chronicle
19:37 - "When is something right in front of you but still hidden from view?"
19:48 - Riddler get arrested

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