Well done, this is a great start for a larger game and gives a pretty good feel for the overall game mechanics. I can see this turning into a pretty good game over time!
Since this feels like the "tutorial mission" of the game it might be good to make the maps a little bit smaller for this section. It'll help draw the player to the immediate objectives. Then you can open things up once the player is familiar with how things work. Can't wait to see where you can take this game!