- tacky progression system (more on this later)
- only 2 options, Sound/Music toggle; not even a slider or anything lmfao
- no control options
- one mode (fine tbh, but still the bare minimum)
- core gameplay changed, the turrets now have limited firing speed but unlimited ammo supply

Because of the last point, you eat dirt unless you get reload speed upgrades, so you play to get some points, buy upgrade, and forcefully die a bit later than before; rinse and repeat.