An easy way to beat the big troll king is to stay Thermite and assign the eye of resytoration. Just keep launching bombs at him and avoid the green things he send out at you. When he comes charging after you, arm your sheild and try to roll away. when he's low and Kalus comes out to help, quickly hit the start button, right away!! Then arm the eye of spirit, and make sure chilla is out. Then snipe her with your ice spikes. Then, you've beaten the game. Also, avoid the trolls Kalus sends out after you, try to hit them with bombs too.