First commit
Enemies move properly in new background now
Final Boss Kitten animation works now
Turrets gain piercing so game is a lot easier. Too easy
Turrets have Durability now (somehow it got deleted earlier). 

Summary of game:

Turret 5 is extremely cheap and powerful but only fire 10 shots
Turret 4 has a lot of piercing to clear the crowd of the weak guys
protecting the boss
Turret3 is the most powerful
Turret 2 has greatest slowing
Turret 1 is cheap and durable, but slow
Final Boss pic enlarged. Turrets fade when getting less durable and
cannot be placed in menu area
Fixed a glitch involving multiple turrets attached to the mouse and the
final boss disabling turrets permanently. Enemy1 is immune to slow,
Enemy3 destroys turrets on contact, and Final Boss has both these
attributes. I formatted all the pages
Done! Start Menu Animation is cooler, Boss kitten is more visible, and
turret placement glitch is (probably) fixed