Sonik has released a new single player map called KillSpree:- "Single player, just one map. open console, type "map vr_killspree". good luck, this one is tough. i recommend playing some fast music while u play >:) and no cheating!!! " It's one map split over two levels. Make your way to the first switch to activate the elevator, then once on the upper level get to the switch to complete the map. The level only uses a few textures and it includes a custom skin for the thug. Its a tough level but you should be able to complete it in one session :) Its only 73kb so why not download it now and give it a run.