The gameplay test is almost done!

I've been busy recently but I've almost got the game ready for testing. I implemented crates. (ammo, health, shield) The game is almost playable (up until a certain point) I just need to add the upgrade menu. The first gameplay test will only have health and ammo option to replenish your stats. The test will be very simple to start off and I'll slowly release more features as time goes on. I've finished level 1 completely so that will be what's playable in the test. (waves 1-4) It's short but the point of it is to test the core gameplay and also game balance.

Things I'll need help with:

Bugs

Balance- the game should be challenging but it should have room for a harder difficulty and it shouldn't be too easy since I'd like to add an easy mode too.

Overall feedback