Wallhack worked a few days ago in the new Halloween map, but every player model was the same and very buggy so it was basically impossible to determine who was on your team or not since all the models were the same purple default spray colour and all buggy. But wallhack worked like normal on other servers (red/blue coloured models)
Fast-forward to today, all wallhacks seem to be not working anymore, even on sv_pure -1, sv_pure 0 servers. I don't even know why, worked perfect last night.