There are 4 "that i know of" multiplayer modes
 If you have some info about it e-mail Brakiss.

DeathMatch
DeathMatch Team
Predator Tag
And something called Deadmeat,
What i think it is:
You can chose a race and you use just that race. Then theres other rules of some sort

I just got some info from a preview that the full version will contain..........
10!!! YES 10 multiplayer modes!