Ironically, I made it there in 10 seconds... However, it does get harder if you don't clean out the guys hiding among the boxes. Turn around, and you could easily have a minute's worth of fighting on your hands...Oh, if you don't make it to the exit before the self destruct sequence ends, the screen blacks out, you hear an explosion sound effect, and you get hit with 200 hit points of damage. In other words, instant game over...