Saftorio's Pizza v0.0.0.4 (Prototype)

I'm releasing an updated build of Saftorio's Pizza. 

Major changes in v0.0.0.4:

• There is now an approx .4 second cooldown on tossing pizzas, but aliens no longer have a small bit of immunity after being hit.
• Hit detection is updated significantly. You can no longer stand in the same space as aliens indefinitely without repeatedly taking damage. However you have a brief moment of invincibility to escape.
• There are now three stages with a 99 second cool-down timer. Each stage has it's own score goal and spawns progressively harder Aliens.
• There are grey (weak), purple (medium), and red (hard) aliens.
• You can now take screenshots with F12. On Windows these are saved to <System Drive>:\Users\<your username>\AppData\Roaming\Godot\app_userdata\Saftorio's Pizza\screenshots

This is still a prototype build so while it is more of a game with actual objectives, it is still limited in scope. Currently, the game ends when you lose all life (you can still take 10 hits), reach 0 seconds on the timer (if you fail to clear enough aliens), or clear all three stages.