This is a lame hack, but I used to play lots of Red Faction on the LAN with my buddies. They where all better than me and I got tired of it so I hacked the config file and changed the power of most of the common weapons and gave myself a homing rocket launcher that you could basically fire and forget. On the open maps you cold fire it up in the air and maybe 30-40 seconds later it would see somebody and you'd get a kill.