Legion from Mass Effect 2 with an M-98 Widow Anti-Material Rifle. The model is approximately scaled to Xenonray's ME2 paper models for consistency.
I've used the alternative appearance textures that you get after finishing Legion's Loyalty mission. Original and alternative textures are both included in addition to legs that are not standing on a box.
Also my build has LED lights installed in it.
Difficulty: VERY HARD
Original texture and model belongs to Bioware