There are instructions for the controls in the game description. 1, 2 and 3 are the weapon switch keys. And also, the game is intentionally dark, you have to make use of your flashlight. The cell tower is out of order, you have to repair it by going up to it.
Viewing post in Nightfall Extraction jam comments
Well, in that case here's another hint. Look at the dirt trail and follow the same trail when you go back. And yeah, I agree that this game needs subtitles. We would've put them in if we had more time, but since it was the first time for a lot of us we kind of had to make a decision between what we'd put in and what we wouldn't. Thanks for the feedback!