0.6.5.1 changes

• tower reworks
• more dummies that heal
• bug fixes
• shift menu removed (for now?)
• BIG graphical updates to:
  • bg
  • walls
  • plats

While I've been at work on adding new enemies, sounds and a proper tutorial along with arena mode enjoy this proof I'm still hard at work on this project with a nice graphical and slight gameplay adjustment, still same tower mode more or less but some light QOL updates.