This is a very interesting concept but there are a few bugs to buff out.
here are the bugs I had:
first as many others have pointed out, when you restart the game the previously dug holes do not get filled back in. this is only fixed by quitting the application.
in terms of visual glitches as another comment pointed out, you laser(just the visual representation) is stuck activated after the fuel hits zero. another thing I found odd was the blue laser effect disappears if you get the gun's muzzle too close the ground. Also the tornado seems to be spinning very very slowly Not sure if this was an fps Issue with my PC but the rest of the game ran pretty smooth so I don't think so.
As for Gameplay, Initially I tried digging to escape the asteroid but that didn't seem to work, so i just sprinted away from it that worked. In my first successful run I sprinted toward the boat till the tornado appeared then just made a straight tunnel to the boat. On a second run I noticed that the tornado follows a set path so I just waited a bit for it to move away form the boat and walked over to it. So you may want to make the tornado chase the player. Also I got the warning about mines but never managed to step on one in over 10 runs.
I felt the camera shake and the footstep sound effect were a bit too rapid while sprinting, you may want to slow them down a bit.
anyway those are my observations. This game is very good considering you only had 2 days, I am very much looking forward to trying you post jam version