Batman: Arkham Asylum - Part 8 - Killer Croc's Lair (Riddler items time stamps in description.) - YouTube
Caves Riddles - Batman: Arkham Asylum Wiki Guide - IGN
Croc Hunt - Batman: Arkham Asylum Wiki Guide - IGN
I can't find the last trophy. I've been driving around for like 30 minutes to find the glowing green thugs but can't find them and I've checked probably everywhere in the map
Batman: AA - Caves - All Riddler Challenges, Trophies, and Collectibles | WikiGameGuides - YouTube