Differentiate the mutant races

[Vitatroll]

edit: also on-screen keyboard is slow but useful

I just used a pen knife and lung power. Now it's sticking so I'm getting the occasional double rs. Oh well.

Mainly I would just like martians to be anaerobic and cold immune if that's not already a thing. Something for the others would be nice too, but for marrtians it's more a fix.