1 Sword Crota Hard (Destiny)
As seen on Destiny Reddit:
https://www.youtube.com/watch?v=rAEDQbjTN-g&feature=youtu.be
Skip ahead because the first few minutes are just setup.
What they did: They used Titan bubbles to spawn a bazillion orbs on the platform where Crota stands before they start the fight. During the fight, the sword carrier uses the orbs to do Smash / Super / Repeat. Down him three times, and you can kill him in one sword.
Pretty cool. More bubble 'sploitin.