Actually I kinda liked it, and "finished" it. You didnt describe how to pick up the key, also movement feels a bit slow, but not a bad attempt overall for an artsy puzzle game. It is very short ofc.
Sorry that i sound negative, but this isn't exactly a great achievement. It uses basic unity features like terrain and the fps movement, that are given to you with unity for free. The only notable object is the evil temple thing, if you did model it then great, but if you downloaded it from somewhere, well, putting a static object into a scene is not really a great achievement in programming.
A yea and also that one that gives +15 sanity feels a bit overpowered... it could remove all your defenses (in the hospital, you forgot how to defend yourself), to make it more situational.
The only thing that bothers me that physical attacks all cost 0 sanity, still they do different damage... i could imagine that a weak physical attack (like the shotgun now) also removes 1 arcane power from the enemy (well... because they bombed the library!), or tommygun also decreases sanity (cus... they hit the head! yeah!), or have other similar effects a bit other than just "damage"...
Also there is no "suicide" cards, like a card that heals you for 10 but taints you for 1, or a damage that deals arcane+10 damage to an enemy but also deals 10 damage to you. These could add a bit more strategic thinking, and combos. (the one that adds taint can be paired with a taint-remover after it, the another one becomes more assymetrical the more arcane you have, and is a good combo with invunerability). Mi-go surgeons is ok.
I registered just to comment, so the game is very good (not the best, but very decent, i played a lot with it).