Boy, it's been a while since I've updated this, I literally worked all day today to fix up and add a lot of things to the old FGD I released for Underhell, and one of the changes is:
Item Randoms no longer have keyvalues for what can be spawned
It's not a big flaw, the item_random works the same way as the game_player_equip entity, turn off SmartEdit and add the classname in the key and the number 1 for the value. I went through every single Underhell map of Chapter 1 to find all the keyvalues and inputs/outputs that Mxthe has used throughout Underhell. I can say I'm really impressed on how they expanded some very limited entities in the Source Engine. Anyway I've went through all the maps and added everything I can, some I don't even know what they do yet, so I'm really hoping to hear some feedback on the FGD (as I'm sure I've screwed up numerous times).
Happy Mapping!
~Kidnation