Thank you for your comment and feedback. I will try to answer your points as best as possible:
1. The spawn of the enemies is live 10-15 sec after you start the game we considerate than you have enough time to read the Gameplay tutorial , but maybe we wrong. But that was a desing choise not a bug.
2. We will implement hotkeys 1-3 to switch weapons, so you will have the choice to swap with either the scroll wheel or the number keys
3. We chose not to implement a minimap because we thought it would take up too much space and the players might lose visibility. But maybe it's a good idea; we will see.
4. For this, we are going to implement a kind of cursor or something like that to indicate where the boss spawns. Also, we want to change the music at that time to something darker. We'll see how it goes.
5. We will review all the collisions after the GameJam.
6. About the SFX, we were very concerned about it but had no time to include it. We managed other bugs, and we simply ran out of time. We literally submitted the game 1 minute and 40 seconds before the deadline, hahaha, that was close. But we will include it for sure. As for "update continuing the game," you keep all your weapon upgrades even if you die; the only thing that resets is boot speed.