Short and fun little adventure. I really how you took such a simple concept but added a story to it (good ending too!) and got the player invested in the outcome. Little things like that add so much to the experience.
The actual gameplay mechanic was a bit simple and the random chance for destroying the alien base confused me at first. I thought I needed some equipment/skill to do it so I left that base and did the other ones first and then realized its just random chance. Maybe the equipment/skill idea will be an option to explore.
Visuals and sound design was good. Simple but effective! Good work :)