There was a lot of bugs. I'll try to give you some tips that would make the game way better.
The character moves with the camera, which can be very problematic especially when talking with Colonel. To fix that you should make the camera move independently on the character rotation on the Y-axis. Or at least, adjust the rotation point of the character.
There is no check for if the player is on the ground. So, you can jump indefinitely which basically allows you to fly. At least, that allowed me to explore the map ! But I don't think that was the point of the game. To fix that, you could add a simple check on if the character is grounded, and make the jump function dependant of this check.
To be honest those were the only major glitches. Though there are other visual and gameplay things that could be fixed.
You could have made the spy balloon go further up in the sky, because it stops very quickly. Making it fly up until not in the player sight anymore isn't hard.
You could have added an indication on where to find the radar, like an outline on it . I didn't knew it was at the spawn and explored the map for 10 minutes before finding it. The map is very large compared to the area where the game actually plays.
The walking and running animation speeds doesn't fit the actual movement speed of the character. You should have slowed down the movement speed. Also, you can run in backwards direction which looks and feels kind of weird.