Overall, it was pretty fun! A few bugs I encountered (though none game breaking):
1) Floating damage numbers are not properly displayed when an attack damages both your shields and armor (only the damage numbers that hit the shields are displayed). The damage is still properly applied .
2) The settings menu doesn't work (the one available from within a battle if you click escape). Nothing happens when it is clicked.
3) On ultrawide (3840x1600) the bottom of the tutorial is cut off, so I can't move past the first page. But honestly, every other part of the game worked perfectly in Ultrawide, with nothing being cut-off anywhere else. Have to say I was pleasantly surprised!
I'll find some time to play more, as I enjoyed it and would like to at least complete a few runs!