Post jam version

Here is a post jam with some bugfixes and new features :

- Score is now display in game over screen
- Screenshakes added when attacking or taking damages
- Vampires now appear later in the game to decrease difficulty
- Killed monsters are now displayed in game over screen
- Holes added
- (bugfix) Dying animation for demon is now the right one
- (bugfix) sound fx aren't played in Title and Game over screens
- (bugfix) walk sound fx is not played when player is jumping