Wow, thank you very much! Adding more enemies or pickups would be easy now as everything is set up, I was just tired and didn't add them as I thought it wouldn't make the game better, because I felt like the completely random generation was a bad idea already. I struggled a lot with the luck/random part and I couldn't come up with anything that would improve it. Adding some guaranteed rewards, "choose one of these two buffs" system (like you have - choose one of the three upgrades) is a great call and I should have thought about it!
Thank you very much for your comment. Congratulations on your first place! :)