I've decided to try using a standard format for all my feedback this time around. Please excuse me if I come across as overly curt or miss something important about your game. I'm writing these all quite hastily as there are a lot of games in the jam this year!
What I liked
Consistent retro styling (it looks like you used a fantasy console/fantasy computer engine for this?)
Simple but addicting gameplay. It's retro in this way too, really does feel like a game from the period.
What I didn't like
I kinda wish it had music, though not having music does fit the overall style of the game as many systems of the time didn't have that capability.
Did I think it was so bad it was good?
No, (un?)fortunately it really didn't give me that feel. It's small, simple, and oldschool, but I struggle to find any bad in it
My thoughts on the modifier implementation
Meh. High difficulty and no winning condition, I'm not a fan of. On the other hand, a lot of games from this era were very hard, and it's clearly meant as a highscore kind of thing. So I'll give it a pass but it doesn't really go beyond the obvious here.
Verdict
A nice little game that doesn't feel bad at all. Maybe not a good fit for this jam but quite nice in general especially considering how quickly it was made.
If you have any questions, comments, queries or concerns, please reply and I'll do my best to get back to you.