After trying to defeat them a couple of times i had the response of, well shit i need to run away. Thus i started running from the minotaurs towards the keep. Having forgotten to deactivate the energy beam; the statues promptly roasted my party trapping me between a gory death or fiery inferno. This prompted the idea, what if i lured the minotaurs into the trap. Well first things first, the traps did not trigger against them, secondly the minotaurs have certainly not skipped practising their jumps as they easily jumped onto the walls. Somehow i managed despite all these shenanigans. A bit frustrating that they are able to destroy the party so easily.
Using the keep's defenses was the first idea I had after getting everyone in my party one-shot. It worked perfectly for me; it must be finnicky under the hood if it didn't for you. Something for them to look at in a future patch, I guess.