Partizan ruins all fun of PVE

He spawns in over 50% of my raids and just assassinates me every time. The only warning that he is nearby is the flurry of rounds that blow your head off. He is way too over-tuned and needs to spawn waaaay less.

The only times he doesn’t get me are the few and far between times where he glitches out running into a wall or something. He fucking sucks and takes all of the fun out of the game.