As far as i can tell, on trainer floors, there are 2 white and 1 red door. go through white for better chances at not fighting a trainer. no warning means no trainer to fight.
Also, i used gyumorai counter strike on that lightning toxic killer, protector killer monster ( i forget what is called, fought on floor 9). since i read from other post counter strike might be more powerful that overconfident ( u would expect it would be ) and it didnt kill it. so i guess its safe to say that this monster is no good against buff monsters guess ill replace him with wraitengine for this event.
Loads of moves like survivor, desperate, retribution, etc become two-shots against buff monsters but they’re still very good to use. Overconfident strike and counter strike fit into this category. Gyomurai has a brilliant slayerbane all too which probably does an easy one-shot on buffed monsters if their team has 2+ kills.