Revealing mistake: In the scene where Captain Mifune is defending a bridge, alone, and commands "reload", he put the right arm of the APU straight, revealing in the background some sparks that floats independent of the action and stops for a few moments.
Revealing mistake: During the battle of the dock, just before Shara takes her second shot at the digger, she is seen from behind as her weapon is being loaded. As Zee is about to slide the rocket in, the green screen is momentarily visible through the barrel. (01:05:35)
Revealing mistake: During the fight for the dock, after the first APU calls for a reload, Kid is seen in an ammo bay right before a fellow ammo runner is being sent out. As the door opens, a sentinel attacks them and all of them react surprised, except the ammo runner and the guy standing next to him, who don't react at all.