1. No.
2. Yes, either with lua or without it.
3. Most likely yes, but it will involve lua.
4. Yes.
Code:
PlayerCount = 1/2/3/4
TeamOfPlayer1 = 0/1
TeamOfPlayer2 = 0/1
In scene's .ini.
0 being red team and 1 being green team.
Not sure if can have 2 teams and AI team.
FUUU-- ninja'd. D:<