Achievement Update — Seven Suns of Orion Steam update #6157208

I've added achievements for all the captains, and a few things (like unlocking all the expansion ships). I hit the achievement cap for Steam, unfortunately, so can't add one for every star earned for every new level. Additionally: Tweaked the chain laser sound so it's not so dominant. Added a special to the Centipede: Molt, which heals all it's segments and levels you up twice. Not sure I like it however, may change it to fill out empty slots from upgrades instead of leveling up.