Aeternum has been shooting up Xbox Live Indie Games for one year, and it's now available on PC for $3 via Humble, Desura and IndieGameStand. Aeternum is a sidescrolling bullet hell shooter starring Ellica, a student of Demonic Magic at Aeternum Academy. When Ellica's schoolmate disappears (not with an invisibility cloak), she must put aside schoolwork to find her friend.
Aeternum features five levels complete with boss fights, and the PC version gets five difficulty settings, ranging from Easy to Lunatic. Legend has it that developer WastedBrilliance can't beat Lunatic mode, so ... have fun with that one.