Thank you for the feedback!
Concerning the aliasing and shaders in general, the look is quite the WIP still... bullets are default sprites that have trouble keeping up with how fast they are going.
Good points on gameplay balance, I agree.
For the bullet offset, this is caused by the lack of any bullet/reticle adjustment. Switching shoulders puts the only yet-functional gun on the right side, creating a wide gap. Fixing this is next on the menu.
Glad you liked the space elevators! They are the main attraction, and how the player can move between rings.