Added New Feature: Score System & Leaderboards
- Added comprehensive scoring with end-game breakdown
- Automatic score submission to Steam leaderboards
- Leaderboards button in main menu
- Damage penalty scales with your score
- Bonus for maintaining high multipliers
- Balanced the damage of some enemies in Stage 2.
- Fixed an issue with the "Electric Projectile" ability getting stuck when only one enemy was present in the scene.
- Fixed several UI issues where buttons couldn't be selected in certain cases.
- Fixed issues with some achievements not unlocking.
- Fixed issues with the total playtime.
