URGENT : Gatekeeper

I need your help to beat the gatekeeper at floor 200, the one with auto poison and stun bombers.
Stun teams are useless. Thanks.
(Btw I need a fast reply i leave tomorrow)

Please answer me
I’ve done it by myself !!! 5 gems OMG

Try starting with some death revenge monsters then mix in some sleep and stun monsters. Target the stun immune and absorbing monsters and sleep the others. Death revenge frontline just need to get lucky and hit the right monsters.