Thank you for the feedback and for your patience with the bug! A proper tutorial is definitely high on my list of things to add. I do regret not taking an hour or two to find and add some license-free music and SFX; audio is forever my bane. Definitely gonna fix it so the UI elements don't pop up until after the transition finishes, don't know how that one slipped past me.
Rough idea going forward is to figure out a procedural map generation similar to Diablo. Each run would be contained to one map, but the player would accrue small bonuses and unlocks that can be carried between runs.