Cool mechanics with climbing on the walls. If you'll be able to add some animations, it became awesome. Perhaps some checkpoints can be added. Good balance in difficulty.
Interesting idea with memorization, but its not clear at the start, probably it is necessary to add some explanations, or highlight obstacles that player need to remember. I would also add some checkpoints, because it makes me nervous to repeat simple things twenty times:)
Everything is quite well. Fix the UI with health and keys. Add some hint for the door, notify the player that he cannot open it because he need a key. Perhaps add some meaning to the artefacts.
Very interesting concept of the game. Tough to play from some point, but perhaps this is not a disadvantage. I would add some guidance at the beginning to make the player get used to mechanics. Positive impression overall. I did not see any cons.
