If you're hosting the game, there's alot of stuff you can do. Go read a tsearch tutorial, or try and find HMT, HHT, and sparkedit online (and tuts, of course). The last three are for modding, but a properly modded room is as good as cheating (you can hide an invisible teleporter in your base to take you on top of a cliff with sparkedit, then put in a sniper rifle with infinite ammo and auto aim with HMT, and move the only ones on the map up to the clifftop with sparkedit again for example). There's tons of other stuff, contact me if you need more ideas.