@Bad Acid: If you go back to the levels you completed with 3 stars, there should be 2 more modes that are unlocked. You need to complete them to get more stars.
played all the way to the end. Took a few hours. Sometimes you have to just replay some of the missions to make money. Some of those will just be the companions fighting and you can watch if you want to rest your fingers. I don't know how I beat the last level. The main boss was still alive with lots of energy and it said I won. I tried again to see if it was a glitch and it probably was. I didn't win that time and I played a lot longer. So, there's probably a bug. The game would pause on its own for a second or two quite frequently and more than once there was a stuck bad guy you couldn't fight. Super fun to beat up bad guys for a few hours for free nevertheless!
Grab may be too powerful however, especially once you exceed 100% chance of working. With no limit to how many baddies you can grab and the ability to grab boss monsters, you can easily form an army to protect yourself.
 "Castle Monster")
 "Kingdom Rush Frontiers")
 "Mighty Knight")
 "2048 Flash")
 "Dead Zed 2")
 "Decision:Medieval")
 "Contract Wars")
 "Pixelo")
 "Pursuit of hat 2"){kind=icon}
 "Astrox")
i think of it more as homeworld and eve offline. but that could be because those games i've played and have not played the wing commander series.