@pancelor Thanks for your comment :)
Hammer in this version, is just crushing tile in front of you (unfortunately also under you but it shouldn't), but in the future probably it will be destroying scenery objects and maybe dealing damage to monsters.
Thanks for your proposition about the controls. I also have an idea... Since there is no action which doing anything on the tile below, we can always do action on the tile in front of player, by default, without need to holding down any key. Spacebar would be just for walking forward and arrows for rotating.
We had many inspirations, NecroDancer was one of it, but we wanted to make turn-based puzzle game instead of rhythm game ;)
I'm happy, you had fun :)