No worries! I won't count this as comment "overly negative" since you brought up a valid points.
I did a lot of cut corner in this game. For each stages (except boss stages) I actually want the map to be randomly picked from a map pool. With this feature, each run would be more random. I also want to make an achievement system, something like "Shoot the gun 1000 times" or "kill <enemy names> 100 times". I think both of these features would enhance the rougelite experience. That being said, I don't think I can release the game on time if I included those two.
And for the duration of the game, I think I too used participating in RPG game making event (outside of itch) where the game usually 1 hour long minimum.
Anyway, thanks you for playing my game! Glad you enjoy it!