More music!

• New ambient music has been added, and the musical system has been redesigned. (automatic activation with battle)
  
• Fixed a bug where the music in the intro was missing.
  
• Changes in control: the spacebar does not make a slide, but performs a normal jump or climb on obstacles.
  
• Slide is now performed when pressing crouch while sprinting.
  
• The standard key for inventory is now Tab instead of I (applies to new players only)
  
• Removed the automatic zoom return after reloading. It seemed like a good idea, but in practice it's annoying. Later, aiming will classically zoom while the holding button.
  

I would appreciate any feedback regarding the current changes in controls. Or recommendations from experienced players of this genre. I'm currently considering adding a shot-while-jump option, but I'm still figuring out how to overcome some of the issues.
P.S. Normal animation of using ladders is also on the way.