Just beat the game, even though the last badge is given when you start the last bonus level. Outstanding game, fun concept, but the difficulty curve is pretty harsh. Last two levels of chapter 5 are killer. Oh, and ion, puke over the wall until the pill gets pushed down to you.
One of the greatest "click adventure" games I've seen in a long time. The graphics and story line are phenomenal. I congratulate you on a completely amazing game. If I could give more than 5 stars, I would.
For anyone stuck on the last boss: Take out the outlaying ships and stations, it will cut down on the things attacking you. Then, use your turbo to do quick fly-bys, unloading missiles and gun-fire at the boss. Hopefully, you get the Missile Fabricator ASAP, it helps make the battle go quicker.