I thought your race were extincted millions of years ago hitman...
Anyway, back to the subject. What about temperature in the game? If there were temperature in the game it would become \"cooler\"

. The Diabolos for example could be resistant to \"heat\", and therefore they wouldn\'t need much protection against it, but on the other hand they would be vulnerable agains cold.
That means that the Diabolos would love the \"deeper parts\" of the cave, and find the \"upper parts\" unpleasant.
It should be the same for other races as well.
You should be able to protect yourself from cold and heat by wearing clothes, like if you\'re in an area where it\'s very cold you\'ll need clothes made of thick skin to survive. If you\'re in a hot area you\'ll need less clothes, or if the area is too hot (for your race) you\'ll need magical cooling cloth to stand the heat.
The temperature of the area you\'re in could be showed in a meter so you would know when you\'re freezing and/or when you\'re too hot.