Small patch to fix some issues that are present on the itch.io version.
- The boss now only activates when it is on screen, fixing cases where it would wander outside the boss arena
- Enemies no longer shoot at you when you are dead
- Added a missing deathzone
- Some more polishing was done on the map
- Tutorial text was added to explain the controls
- The shotgun at the beginning of the game is a lot easier to see