The Server i played on worked the same way the plugin someone (cant post the url, thread is by zxz0O0 ) posted on this forum for IW5 (couldnt find the plugin thread for IW4).
One Team had the ability to hide as a barrel/car/tree etc (you get the idea)
and the other team had to find all those objects. The 'hiders" could knife the 'searchers' too
That was our test mod we removed it
the hiders get a tk after 30 secs and after 3 mins the will get a usp with tactic knife but without ammo and the gravity is not the same as normal so you can jump higher and longer
the searcher has a usp with tactic knife no ammo and tk too
that was possible on the test mod we removed it cause it fucked up the fps of some people and the hit reg was really bad
1 - Everyone here hates RepZ as they run the alterRevolution server, which is buggy and unprotected by an anti-cheat.
2 - RepZ requires you to register through an IP as they can't manage cheaters.
that is true but not just because of that because the Admins on RepZ are not good they dont know the difference between Hacker and Skilled player