Mostly under-the-hood code changes. A few things that may be noticeable to note;
- Stage introduction title graphics now use improved number graphics that more closely match the theme of the text. Also, some stages now have corrected numbers for their titles.
- (some) double turrets now have recoil animation
- Slight increase to horizontal pan, which effectively is an increase to player horizontal movement speed.
- Adjustments to level loading so loads may appear slightly smoother
- Lighting system rework (may have broken lighting on some stages)
- Improved tile textures