Claymore Vanguard vs Haestrom Geth on Insanity (Mass Effect 2)

Tali's recruitment mission, be sure to pick Zaeed with his Squad Disruptor Ammo if you don't have it yourself. For the Colossus fight, squadmates with Sniper Rifles can deal a ton of damage to the armor of the Colossus when you put them on the platform to the right.