Really enjoyed this, especially liked the lack of objective markers in the base mission, following the roads between them just made sense.
Think a wider variety of enemies/ mission types would be great (maybe one where you defend a base?) and different weapons dotted around as pickups sounds like it would be fun.
Overall though this foundation was pretty good, look forward to see what you build on top of it. Good luck!
Oh and here's a video of my thoughts if that's your jam: