ACTF comes with combat mode, a set of rules defining Combat CTF which plays exactly like Expert CTF for Quake 2. Both modes of play come in one download. First and foremost, Assim 2 isn't NOT Assimilation 1 rebuilt for Q3. It is a whole new mod, but still has its roots in the original Assim. Assimilation 2 sports three brand new game play modes and one revised game mode.
Elimination is last man standing mode where the goal is to be the last man left alive.
Pickup teams is essentially team elimination where the goal is to be the last team alive. Assimilation 2 also features a full featured match system for facilitating clan matches or tournaments. Players, or teams, can be eliminated from the game if they can't keep up with the rest of the pack resulting in a final showdown between the top two players, or teams. Finally, the preview features tons of ways to allow server operators to achieve a very unique feel for their server. With customisable starting weapons, starting health, and starting armour and the ability to remove any and all items from a map you never know what you're getting yourself into when you join an Assimilation 2 server.