Dig into Bevan's Shorts

What are the Critical Failures short stories?
From the mouth of Bevan himself:

"When I finished writing, re-writing, editing, and publishing Critical Failures, I was a little bit exhausted. I was happy with what I had done, excited about sending it out into the world, and eager to continue the story...so I thought I'd take a couple of the guys on a little side adventure. Something that wouldn't have any major consequence on the events of the novel. That effort became Cave of the Kobolds."
 * Cave of the Kobolds
 * ZOMBIE ATTACK!!!
 * Orcs, Bears, and Assholes