Fix unkillable monsters in Expedition

Just played expedition and when I got those rare monsters to two thirds of their life they just instantly regened to 100% ove rand ove ragain.
That expedition was lvl 79, not even 83.

Expeditions are way too hard, it should be rewarding when you find one, but like this I would probly rather sell that cheap for some chaos so someone else can suffer instead of me. :D

And those lvl 83 expeditions are absolutelly undoable for most players, those are just getting one hitted while having 40000k armor and 4000 life. Problem is those monsters are overally very though and too aggressive.

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IN SHORT: EXPEDITIONS ARE TOO HARD.