Mayhem Intergalactic is done (or is it?)

Today I unlocked the final achievement in Mayhem Intergalactic, Maestro of Multiplayer Mayhem. First game that I've unlocked all the achievements in. And with that, the game's done. I don't think there's anything else left for me to do in that game. Actually, the game's page on the Steam store claims that it's possible to create custom maps. I've never tried that; never even knew the feature was there. Maybe I should try to figure out how to access that...

Anyway, as you can see from the page I linked to above, I'm the first person on Giant Bomb to unlock the Maestro of Multiplayer Mayhem achievement. In fact, only 1.0% of Mayhem Intergalactic players have unlocked it. I have one of the rarest Steam achievements in existence, so that's pretty cool. :)