My wife and I have been playing horde for 3 days straight now and can not get past the Lambent zerker on level 40. Every single time its the lambent zerker. Where is the Brumak? Where are the regular Bezerkers? Can anyone please tell me how long this will last? Or at least how many times does the lambent zerker show up and then suddenly not. We've done it so many times that every once in a while she wont show up. Just the regular locust. Can anyone please help? We just want to get to 50 and get the achievments. Thank you all very much and Merry Christmas!