Super cool. As a fan of roguelikes, the way this game gets you building combos and praying to the rng gods for good parts is very fun and addicting. There are a couple things I had trouble with though. For one, the tutorial is a lot of information at once, I was able to figure the game out after some trial and error but I think that could've been avoided if the tutorial was playable, rather than just text boxes. The second problem I had was a lack of feedback when hovering a part over a tile. I was expecting it to show me the result before placing, but the number was stuck at +0 until putting it down, and sometimes it wouldn't update above 0 even after placing. (Maybe I'm just not interpreting was "orthogonal" means right, but I thought it was just adjacent and not diagonal.)
Overall, based dungeon builder.