Halo 5 Legendary Solo. Incredibly frustrating. IMO, it's actually the easiest Halo of all time, with one exception: [i]The Warden Eternal. [b]8 TIMES![/b][/i] This boss, which shows up every other mission, was made for coop: his only weak spot is behind his back. Which you can't hit. Cuz you're alone. And your team is dead. And he's looking at you. And all his attacks are instant kills. And did I mention you have to fight three at once!?