Wow thanks for completing the game Ategon!
Your feedback is definitely on point.
- Telegraphing attacks is a great idea. I had considered adding in a "countdown" bar of sorts before the kamikaze trigger!
- We had initially planned for "shield" to also exist as a drillable mineral, but we scrapped that idea as we did not go ahead with the boss fight sequence. Without a boss fight we realised shield damage was trivial and players likely didnt need to replenish the resource.
- Variety would indeed help improve the gameplay! Adding different planets with other minigames would be one way to do that!