Continuity mistake: When Pete is holding his hands out, as per Ego's instructions, the orientation of his hands changes. Initially, his thumbs are roughly at the top, but when the camera angle changes, they are at the side. No time has passed, and Ego didn't tell him to change anything.
Continuity mistake: When Ahmanet enters the Crusader burial chamber, she walks in holding the dagger with her right hand and then picks up the stone. As the camera takes the close up shot, it is very clear that she picks up the stone using her right hand. When the shot changes, she is now seen holding the stone with her left hand. (01:22:55)