Possible improvements:
- Move the camera farther away for a better view
- Differentiate the background, the current one is little distracting
- I like the style of the tutorial (text in the center of the screen at startup), but you could make it a bit bigger
- A small explanation of the level objective (1-2 lines) would be nice
- Add drone sounds synchronized with its movement
I liked the game, it does its job well!