Quote Originally Posted by Hali View Post
Put simply, your DPS were too good for the fight and pushed his phase. Which results in Leviathan going "lolno" and killing you no matter what.
My advice is to stop damaging Leviathan as soon as Mercy Stroke and Misery's End pop up, as he seems to hit his "NOPE" button around 17%.
There are actually a couple of fights where over DPS can be a problem. Wiped in Titan EX once due to over DPS. Twintania and Raffelsia needs to control phase changes if not it could be messy.

Weird SE logic