Game is fun! Been playing on my NES with N8 Pro, no issues at all.
I'm on floor 43 and only encountered a shop once at floor 3 or so?? haha
Finished my first run last night. I will say shops became a lot more common once I got past floor 70 or so.
Overall I had a lot of fun. I will echo the sentiment from other comments that some of the hitboxes are very tight when walking through pathways, and sometimes when attacking. Great initial release though and I look forward to v1.1!