Nice intro and options (pause/rewind).
I think the road is too smal or the mobs are coming too soon or moving too fast (or a mix of these 3 features)
I manage to create a checkpoint so aliens flew back, but I did not manage to create a drone to kill them. During a test, I created 2 checkpoint (1 at the beginning of the road, 1 at the middle), so alien were moving between them and some score was increasing, but I was not able to see the global score or complete the level.
There is lot of potential and I think it needs some more time to become a great game. The idea of mixing a tower defense with a bureaucray game (I guess the guy in the checkpoint is the cousin of the one from "Papers, please" ?) is really nice but it is probably too ambitious for a 2 week jam game on Lynx.