Hello and thanks for your feedback!
You're right, I wanted loots, upgrades, xp and levels, buffs when eating extra souls, and more enemies. I wanted to make zone types but I couldn't.
The double firerate zone was about to be one of zones that get generated as the map expands. I couldn't implement even though it was really easy. Because I was busy finding sound effects and music.
I could remove it in 1 hour extension, but that wouldn't be a good thing to do because we where supposed to make a game in 96 hours and no more no less.
I'll surely improve the spots you pointed. Thanks a lot!