Fun! Smashing the artifacts is very satisfying. Platformers in first person are notoriously tricky to make, and I think the hold-to-jump here is not the easiest to control as it's quite difficult to estimate exactly how far it's going to take you. I played again with the simplified jump and I prefer it, mostly because I could tell roughly where I was going to go due to the instant feedback of the jump distance/height each time. I think perhaps if you had more time (as this is a little complicated) you could add a line/arrow/circle for where you're going to land after a jump, to help the player line things up. Anyway, I had fun playing this game, nice entry :)