Has anyone else tried for the "all rare monsters" badge? I finally got it recently, via my fifth game-winning character - the difficulty seems to be hunting the acid scorpios, which are really difficult to find (I think I saw somewhere it's about 1/30, which with only 3 levels of Demon Halls isn't great odds) and you're time limited by your torches (once you're out of light, the scorpios have the upper hand no matter what level you are really).
So, have any of you guys tried/had difficulty hunting the acid scorpios? Have any of the other rares given you problems?
Also, does anyone know what the shielded brute and acid scorpio special abilities actually are? I will admit that I never found out before getting rid of them as quickly as I could, and it's not on the Wiki...