Fighting the Sentinel boss image - Plethora 2012 Disclosure Game

Plethora is an old-school, brutal, side-scrolling shooter.  It has an innovative control system, 13 weapons, achievements to unlock, numerous stages and huge bosses!  It even has a bit of a story - yes, I know you aren't supposed to do that in a shmup!  Don't worry, the story doesn't get in the way of blasting everything to bits, just ties everything together and adds a bit of intrigue.  I have designed a new "Mastery" system so you won't have to repeat stages that you've played to death - unless you want to - but you will have to earn your way through :)