What the hell is this 6.1.2 Sentinel Mini Boss

Warlock should be able to do it, but sp2 can be challenging to dex. As others mention, try to keep him to sp1, spam sp1 yourself.

If you have a Mags and Apoc, turn him into Horseman with Apoc, he gets 100% bleed resistance, and Sentinel becomes a tin can.

1 sp3 > game over.

TAN06010601

You have Cgr?
no,i don't get good cosmics at all

What cosmics do u have?

gamora,galan,venompool -5 star
silver surfer 6 star

MasterA

Sentinel sp2 dex gets easier the more to do it