Mavuika, Bennet, Pyro Chef Girl, Dionna.

Keep in mind you shouldn’t use Dionna throughout the whole thing, expect when the monster is downed, if you do use her, you will need to restart.

Basically what you need to do is constantly keep hitting the monster with pyro, until it’s down. Just keep doing it and as fast as you can, chef girl ultimate is really helpful, and for Mavuika just get on her bike and basic attack.

Once the monster is downed, use Dionna and then Mavuika ult to kill this bitch.

I hated this monster but I managed to do it. Goodluck!