First play and I'm planning on playing it longer but here are at least some comments before DD ends.
It looks really polished, the basic mechanics are nice and easy to get. I guess the main menu and UI could be a little more fleshed out so as to be at the level the art/tiles/animations are.
One thing that adds some noise is that there's lots of small objects that kinda clutter the floor and at first it makes it difficult to determine enemies like fo example the enemy plants from the rest of the objects on screen, I could see this being a design choice and if thats the case then you should probably disregard this.