First Boss Added!

The boss appears on wave 11 on each stage with stronger stats than the last
It has multiple phases and abilities and will be incredibly tough but there's a checkpoint right before so death won't be too punishing
I'm gonna keep it's abilities secret for now outside the game

Main changes

Active abilities now recharge by killing enemies instead of just waiting for them to recharge. The amount recharged depends on the money dropped by the enemy
The points required for each active is the same for all active abilities' cooldown in seconds except for the Sentry which now requires 10 instead of 7, Stun Grenade which now requires 8 instead of 5 and Grappling Hook which requires 5 instead of 4

Decreased the amount the Medkits healing upgrade increases the healing to 0.25 from 0.5

The Spitter will now maintain line of sight a little better

Refined screen shake a bit

Added rebind support for restarting from checkpoint and just fully restarting

Bug fixes

Fixed going to wave mode through the skip tutorial pop up not resetting upgrades if the player closed the game through other means than just going to the main menu and pressing quit

Fixed the Pistol's damage upgrade receiving the damage nerf from the previous update that was meant for the Minigun ._."

Fixed the Boomerang's projectile count upgrade effect getting forgotten when restarting from a checkpoint

Fixed Ghost not letting you pass through booster enemies

Fixed Invulnerability not making you immune to knockback

Fixed The Spitter not really doing its melee attack when the player was in range

Fixed the music being waaayyyyy too loud

Did some other stuff I prob forgor ¯\_(ツ)_/¯