If there's still room, I may jump in on this.

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[quote=@Pathfinder]
WIP, I gotta go to graduation soon so I don't have time to finish now but I would appreciate it if someone could look at the powers real quick, check for possible OP problems. 
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Powers:
[i]Greater Healing Factor:[/i] Artyom's body can heal from almost all wounds granted he has enough radiation to fuel him. His own internal supply can heal superficial wounds within minutes, deep ones in about half a day, and breaks within the week. However should he stick his head in a microwave the speed is almost doubled. If he were to stand next to an unshielded reactor he would become nigh unstoppable. This all comes at the disadvantage of being in constant pain that only grows as he becomes more irradiated.

[i]Exchange Healing:[/i] Artyom can "steal" injuries from people, healing them but hurting him. Too much healing at once can kill him but it also gives a slight boost to his natural healing afterwards.

[i]Radiation Conversion:[/i] If there is too much radiation in the area, Artyom can absorb it into his body and convert it into harmless heat energy for people not as durable as him. However this heat energy has the adverse effect of harming Artyom himself, usually manifesting in burns of varying degrees and the loss of skin in general.

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I thought your character might be limited by lack of radiation, but then I started Googling and found that radiation can be found in [url=https://hps.org/publicinformation/ate/faqs/consumerproducts.html]everyday things[/url].