Solid presentation and concept.
Good pixel art paired with dynamic music is awesome.
The world generation and enemy spawns are well executed.
A couple of issues I noticed:
- You could accidentally skip over tutorial text if you repeatedly click on the same control, which runs into a bit of an issue where it cuts off in rapid bursts and then starts the game
- Emphasize the importance of land rockets (I know the tutorial brings it up, but I just thought it was a nifty inclusion when using them, as opposed to being a requirement to maneuver)
As for my suggestions:
- Possibly display objectives (I was able to find the pilot, but discovering energy sources threw me off [which I'm assuming was killing another large enemy])
- Adjust UI clarity (could be a small symbol or hover tooltip, but I was confused about what each one was at first for a short time)
- Display enemy health and attack range (if you want to keep those hidden, you could instead signify that they are low on health by showing their sprite as damaged or such)
- Include the ability to click the green ability and click for where it lands (drag and drop can stay for faster actions, but by including this as well, it makes it easier for players to use)
- Add key binds for each ability (it can just make gameplay much more accessible)
Overall, this is a pretty cool idea, and I could easily see this being explored a bit further!
(As a great example for a starting point, I would look at Into The Breach)