I posted this for fun to start off the month of October before the 31st which is Halloween. This mockup is inspired by Portal Defenders and the settings is based on Halloween theme.

List of Newground users and Characters featured here:
Tom Fulp wearing Alien Hominid antennas, Edmund Mcmillen (aka Bluebaby) with Issac, Egoraptor preforming a Shoryuken, Sabastic using Morrigans arm cannon, Dan Paladin (aka Synj) wielding a weapon from Castle Crashers, and Wade Fulp wielding his current level sword. All the enemies are mutated Flatheads (characters by Synj).

Made in Gimp and used lens distortion effect. Hope your Halloween will be a great experience by the time it's the 31st of October.

Now I'm spending free time after making this bit of a tedious work.