I only released this when I was having trouble with the hobgoblin in the goblin camp without boom barrells trying to solo it. (dror something or another)
6th attempt, went invis, and shoved a caster by the spider pit into the spider pit.
Problem solved. waited for combat to start. Except it did not.
Pushing does not break invis.
so I pushed all of the npcs, including the hobgoblin, into the spider pit, without breaking invis.
I haven't tried it anywhere else, but, in theory, any place that has a ledge, you can push, and you can invis a char and either kill everything, or you can corrall them into a pit and rain death on them from above.
This reminds me of early BG 1 with surrounding Drizzt with 20 summons, and flame arrow death from safety.
In any case. I mention it to point out to devs so that they can fine tune what is turning out to be a very promising combat system, and a involved turn based game.