Implemented hearts displaying how many lifes the player has left (empty heart is no life, full heart is one life) (total of 5 hearts/lifes). Also implemented bouncing away when the player runs into an enemy or the other way around (temporarily using F3 and F4 instead to trigger because of access violation issues).
Add font I forgot to add a long time ago...
Replace one flying enemy with a slime enemy and add 'dead effect' for dead flies. They now fall through the ground and disappear.
Set the Y position bullets are fired from five pixels lower so that they also hit slime enemies.
Add dead animation effect for slime enemies too (a sprite of a dead slime)