long time ago, when I saw first model for w3 I thought " I would make a troll blademaster!" ; ]
Looks nice but it should be scaled a bit, trolls are less bulky and has longer arms and legs so they look a bit unproportinal. Ice trolls also wear animal fur to warm up. With naked chest this guy will sure catch a cold

But this is only with skin so can be changed easily, even if it means CnP'ing from original ice troll's skin. His pants and hair should be team coloured. Blue team looks fine but it could look even better if his braclets, belt and sandals would be different colour. Dark green or purple? I don't know

Try to change his face so he would look more different from other trolls, like adding some paintings or some other stuff.
Overall I think it deserves 4.