I've looked through the guide, and I saw the thread that started a few weeks ago, but never found a concise answer to the whole "People sometimes have to leave early" predicament.
Let's go down the cert, one box at a time, starting with general gold, XP, pp.
He garners 1 XP because he was around for three encounters.
He gains 0 PP because he was not around when the party completed the first and second objectives.
He gains all of the gold because the party found all of the items that give them gold ?
He gains his day job, should he have one.
He does not gain Dragonkiller because he was not around for that part of the scenario, even though the rest of the party garnered it.
Any listed items found after he left are crossed off the sheet.
Is this reading of awarding appropriate XP, PP, GP, boon, accurate?