Added a new game tutorial with 5 levels:
- Cursor manipulation
- Main weapons (Gun & Laser)
- Turrets placement
- Buildings on base
- Pointers to enemy waves
Turrets can be built on sphere around base - just build them.
By default new turrets are placed on sphere around base. But you still can place them manually using T+Space.
New UI pointers - arrow to enemy gate.
And many other UI, performance, gameplay, balance, achievements improvements