Wow, you're working in the soundtrack for an personal project too? Cause I am.
The ambience feels just as alright, and those drops make you feel like something worse's coming, but in the end, it's the suspense about incoming invaders.
Though I don't think the drops are well announced -apart from the one at the beginning, and for this being at 150 BPM, it feels like it's going at a slower tempo.
Still, I like the choice for percussion.
It overall feels like a good choice for a soundtrack. It's the type of track that looks for counting a story.