The Martyrdom of Polycarp

"The Martyrdom of Polycarp" (translated by Roberts and Donaldson).  Available online.

Some oddities:

• "were no longer men, but had already become angels" - I guess it does go back further than "It's a Wonderful Life" :)
• There's a fair amount of anti-semitism (especially in chapter 13).  Hard to tell how much of that is post-70, and how much was added by later authors.
• No explicit definition of the Gospel

And the good points:

• "we do not commend those who give themselves up [to suffering], seeing the gospel does not teach so to do"
• "the churches throughout the world" (churches - plural)
• "the blameless one for sinners"

End on a good note :)