TDLR:
My favourite game so far. It feels that when it will come out of its beta, it will be worthy of its inspiration (Slay the spire, that I will shorten to STS going on).
What I like:
-The gameplay in general. It is rock solid. The combo system and the enemy turn system are welcome addition to the STS-like genre.
-The art. Sceneries and enemies are cute, the cards give a fun STS beta art vibe.
-The musics who are better than the ones of STS
-The gameplay, again. Gameplay is king.
What this game need (in decreasing order of importance):
-More content (more characters, more animations, more enemies, more musics...)
-Better balancing. It was pretty easy for me to setup an infinite with delays. The relics that give 3 extra cards per turn for an increase in items cost (who aren't very good anyway since they take a slot in your deck) and the one who reduce the cost of all skills by one (it has a huge drawback, but if you handle it...) for example seem they can really break the game. On a smaller scale, the equipment who gives +10 strength and dexterity is also busted, because, you know, I can just play it, press end of turn and play a new turn with a new hand, full energy and +10 strength and dexterity without the enemies even acting once. The 5 hits cards seems a mandatory pick to counter the encounter with the evasive elite. Being able to burn without drawback 5 cards of your deck (or even with the drawback if you can setup an infinite heal) is also pretty strong. On the other hand, some interesting mechanics like the focus system or the cards that gives strength x2 for a turn or dexterity down for enemies seem underpowered. Also, encounters in hallways feel pretty unequal, the difference between a one enemy room and a three enemy room is huge. Curse cards also feel pretty nasty, as the ways to get rid of them are not 100% reliable.
-A save and quit system. During the run I give the final screenshot from, I really would have wanted to do a break midway, especially since I had no idea when it will end.
-Something feels weird when playing the cards in this game compared with STS. I can not really explain it rationally. It feels less snappy.
-An easy way in the deck screen to know how many cards you have for each combo value.
-A more in-depth tutorial
-May be a way to know the enemies' actions or at least their possible actions?
-More content
-Fixing some UI bugs I will post under when I find the relevant screenshots back.
-I forgot: more content
PS: By the way, I am a STS veteran, I reached ascension 10 and then took a break that still lasts today, as I was bored of always building the same deck.