Update #7 : Achievements!

After a long delay punctuated by a hard drive failure comes the first pass of Steam integration! Sixteen glorious achievements for all your achieving pleasure, and a global high-score board with which to show off your prowess. Most of the achievements should be pretty easy to get for experienced players, but harder achievements will come with late-game content. Please let me know if there's an issue with either the scoreboard or achievements, since this is my first time working with the Steam API. In addition, the final early/mid game alien race has been added; the KaasTau. These machine-plant hybrids already had two enemies in the game, but now have four new spike-throwing, laser-shooting, player-slowing enemies, topped off with a deadly boss. As always, full changelog below: Features -Sixteen Steam Achievements! -Scoring system with a global high-score board. I can post the breakdown of the score calculations if people are interested. -KaasTau completed, with four new enemies and a boss -Many planets have improved graphics, with more contrast and noise -Audio and gameplay settings can be adjusted from the pause menu Balancing -Shopkeeper is immune to explosives -Item shrines decreased to 75% chance of that item class -Item shrine text displays for 50% longer -Megalith's slam attack has sound -Cluster bombs nerfed -Better walk cycle for KaasTau Crawler -Increased glowing planet's attack cooldown -Ebzer Annihilator has less HP at lower levels Bug Fixes -Emmy no longer slides backwards on ice after dodging -Music properly configured in audiogroups -No crash after defeating Cyborg Salvagers -Ebzers will dodge roll away from Nadia's melee attack -Fixed challenge unlock issues with Viktor and Nadia -Fixed bug where sunlight wouldn't clear between stages