Thanks for the recording! I really enjoyed watching you play. You did very well getting through a map on your first attempt with the prize room even!
I am not sure why the graphics were so off. They should be crisp pixel art. I have not tried every resolution though so maybe something I missed there.
There does continue to be more of a variety of enemies as you go deeper in, but you also get more powerful. The enemies selected for rooms increase in difficulty the further you go. There is a small difficulty bump for red rooms which are not on the main path. Its got enough content to go through about 3 runs with unique bosses and enemies.
I also would like to have had more variety of attacks. It is a good suggestion. I tested letting them damage each other but it was pretty broken. I also tried to balance having fun, readable animations versus bogging down turn movement. The animation times are variable to allow things to speed up when possible but it still feels a bit slow as you mentioned.
You put as much time in as I would hope for a 7DRL playthrough though. You provided good ideas. I think you got a solid sense of what the game is meant to be and I appreciate you giving it a go.