I gave it another try. Here's a little bit more feedback.
When the game loads, you are met with 3 options: menu, start and tutorial diagram. You have a problem with wording. Your options should be "New game", and also have "Continue" if you have an unfinished run, instead of menu it should be "Settings" or "Options". If planning, for a desktop version also add "Quit game" or "Exit". You need to do some research first. Look at other games. When a player starts the game for the first run, do a very quick tutorial. No need for a tutorial option in the main screen.
11 minutes. I don't get it honestly.
Gun module Upgrades screen: instead of one big block, have 3 separate cards, and increase the clickbox instead of having to specifically click the icons to select the upgrade. Add some spacing between the cards, make it easier to read.
The art visuals don't fit well together. I am walking, there's a road and I can't tell if I can go through it or not. I didn't feel anything special about this game. The enemies are bland and just look bad. Game over screen is terrible. I did like the upgrades and the way some enemies shoot projectiles.
All I can say for now. Will give it another try in a few months if you continue developing it 🙂
Regards,
Remi