Thanks for playing! I'm glad it clicked with you and that you liked it enough to leave feedback to help make it better.
You're right, the character balance in this demo was pretty off. Part of what I've been doing recently has been re-balancing character stats and skills. I also have more character specific skills planned out to make them feel a little more unique. Each character (there's 10) will also be given a few starter skills at the start of each run.
I'm planning to get the steam page live sometime soon and then put a more up to date demo on there in a couple of months, so I'll know quickly where things stand after the updates.