Movie about group of people trapped. There was a teenager with a cane, supposed the the group’s brains and leader, who looked into some sort of device and got his head cut off.
There was a goth woman who went to the restrooms and was somehow killed by the small robot.
There was an adult male who fought the main antagonist on a motorcycle near the end.
There was a woman who seemed to be a cop that tried to kill the adult male near the middle of the film.
They talked about leaving the place and going into “paradise”
The main antagonist was some sort of robot(I think?) and his minions were small robots who could use lasers. I saw this movie in around 2003-2005.