Level 28 with 4 people. Camped at the top of the stairs that are infront of the teleporter which is near the electricity switch. We all had LMG's, Monkeys, Wonder Waffer's and Ray Gun's but run out of ammo lol :p
mine is 13 on my own i had upgraded stg and normal trench.......round 25 with 4 ppl i had upgraded raygun and upgraded wunderwaffe, two others had stg and colt, the other one had upgraded raygun and stg we all had no ammo i suggested teleporting as we would have a chance of getting max ammo but they didnt listen and they knifed the last zombie crawler, cripple whatever you call it