The big daddy of all the colossi is fought during a thunderstorm and has great atmosphere. Opening a bid sealed door with your sword's light beam, losing Agro to a crumbling bridge and then seeing the rain and wind kick in is memorable. The approach can be harrowing given his extremely powerful energy blasts he's constantly firing at you, and the climb, while very easy and simple is intense given how tall he is. You'll need to hit him in several areas to get to the one weak spot on his head, and once you kill him, the task set to you by Dormin is complete and the game is over.
