graphics work

Spent a while working on graphics, lighting, and some vfx, it is slow going because I don't know what I'm doing at all but I'm learning.

The flames are from a particle effect asset in the unity store and the player ship and barriers are from free turbosquid asset

It looks like even if you get the asset for free, the free assets are never exactly what you want so I'll need to learn some blender skills anyway for customizations.

For balance changes I moved the player back toward the bottom of the screen which gives a little more reaction time, and hides the "tail" of the particle beam.  Also increased the started speed of all difficulties.