phases and skins

ADDED PHASES

enemies now spawn in themed phases 

phase 1 is the undead phase

phase 2 is the ethereal phase

phase 3 is the corrupted phase 

phase 4 is the frozen phase

phase 5 is the giant phase

phase 6 is the cursed phase

phase 7 is the magma phase 

phase 8 is the void phase aka the final phase

ADDED SKINS

there are now 4 skins to choose Apon start up.

CLEANED UP CODE

game now loads up faster and run better.