This is your first real sneaking mission. It is actually very easy, as it's just a training mission. Avoid all glass on the floor. Sneak up behind people and take them out non-lethally. There's no real tricks here, except the very last entryway up the ramp. When you go up the ramp, stop before the entrance to the final room. A guy will walk out of the entryway. Take him out and THEN go in.

True Crime - Streets of LA Walkthrough


True Crime - Streets of LA Review