Nice game! The intro really adds to the experience, and I liked how you had an objective at first (The 30 years).
My suggestions would be that the enemies sometimes spawned just where I was, causing an instadeath, it wasn’t that frequent, but you could make sure that that doesn’t happen. Also, I’ve found the movement a little bit too slippery, but that’s just me.
Overall, it’s a solid entry and a really fun one!