This video was really helpful, Thanks for playing!
You can change hotkey keybindings in the setting to rebind pause to esc or anything else.
As you guessed, a lot of things like fuel limits were designed around pvp which was the main focus of this build.
The shooting puzzle area was unfinished. In retrospect, I should have removed it until it was ready considering the rest of the campaign is functional.
Again, thank you for playing. the single-player mode will be given more attention before next demo day.