Revenge of Red Update

Hey everyone, just updated the game, check it out if you will!
Thanks!

- Added unlockable 'Boss Rush' mode.
- Added stagger resistance to enemies, to avoid stunlocking.
- Added hints and tips to the UI.
- Adjusted health on certain enemies.

- Improved collisions on terrain objects.
- Improved camera collision.

- Cauldrons are one time use in Normal mode.
- Reduced file size.