no
Blood cannot be turned off in Halo 3: ODST.
You do not start off as a rank because there is no online matchmaking for ODST
You can't. If the cursing bothers you, don't play the game.
yes in the options
I'm asuming you're asking if the start of that game was in the middle of Halo 2.. Yes, it is infact. Where ODST starts is leaving right off the end of the level called Metropolis with the Chief where you kill the Scarab. You, the Master Chief, are leaving with the Covenant ship into Slipspace while the ODST's are dropping
go to the menu were you can personalize you charter pick on and it is not rookie it will allow you to take it off.
No.
Violence is the answer
you cant you can lower the graphic content for less blodd tho but cursing you cant ban
No you can not unless you are using a PC
Its in the building were you have to hold off waves of enemies. Then you take a elevator down.
yes but it isn't like the halo 3 matchmaking instead it is called firefight and you and other people get to fight off wave after wave of Covenant