for AS SA:
when you go up the lift at like 0:49-0:51 (or if you are slow, somewhere else in the 0:50s) then book it, open the door, and shoot the skedar without stopping, turn corner, shoot next without stopping, open door, turn right, wait like half a second or something and shoot the next, reload, run through door, shoot one from far...just book it into the room you need to, go in a bit so both can see you, shoot one to the left, then shoot the one on the right, open door and run like hell. after you get up the ramp, turn left and shoot the one from far or dont shoot him at all if you want. run past, turn left down the hall, and there should be one far down, dont worry about him. when you get there, turn right, and open the door which opens extremely fast. go right, and follow through the doors, and shoot the brown things while strafing. you can use AR34 or mauler, but if you are running low on maulers bullets, just use AR34. well after you destroy those while in strafe keep going, head up and hopefully elvis survives. i never make the lifts (i make it there at like 2:00 or so but the lift isn't there...but i've made it faster)