Changes

- Added a battle background brightness setting
- Gave the player invincibility for the first half beat of the fight so if you are spamming keys while waiting for the countdown and you go a bit over the countdown, it wont affect you
- Changed "collect" on loot screen to "return" if you didn't get anything

Fixes

- Boss' doing damage animation no longer overlaps onto the attack bar
- You no longer see the final boss' mechanic upon first opening the help menu
- You can no longer take damage while spamming keys before the first boss