I am sorry but I don't see why he could not be like Piotr Nikolaievitch Rasputin (Colossus) from x-men and deflect heavy gun power. 

One: Half of the first cast was way powerful than that.

Two: G said that at the beginning the bracelets are 100% affective. So no one will have powers at the start. Then it will slowly start weakening so he would only start having slightly tough skin. So it is not like he will suddenly be OP. 

Also yes G said he would like to play the RP after we have escaped.