Most that you could identify, the action bar buttons, UI Panel art, (I know it has XPerl)

ui panel art, not sure if its just a skin of spartanUI. buttons prolly is bartender, HP bar in the middle is IceHUD, pally power, recount...

titan panels for the top and bottom bars on the screen. the hover info, not sure what he's using but TipTac also works for that.

what i dont understand is why his omen is on the upper right hand side when all his buttons and crap are on the bottom of the screen.