I hate the Vault so much. Sometimes it's easy and sometimes it's the hardest dungeon you've ever run.

2nd Boss especially with his BS "I spawn Aetherial Tears everywhere and then push you into them, causing Vulnerability stacks every second!"

Screw you. Screw you for spawning tears under the tank. Screw you for pushing me into two tears at once so I get two shot. Screw you for having the tiniest friggin arena to dodge those tears in. Screw you. SCREW YOU.

Final boss is a crapshoot depending on whether the DPS know how to dodge all the damage, since if you play correctly the tank is the only one taking enough damage to warrant healing outside of the arena-wide AoEs. If they dodge, it's easy. If they don't, GG wipes ahead.