This quest will expire after the events at the Mechonis Core.
Monster Quest 3 - Part 2 is a Timed Quest in Xenoblade Chronicles. It can be received from an Alcamoth citizen on the northern connected bridges outside of Imperial Palace during the day. He wishes to take Alcamoth's security into his own hands, but does not want to get his own hands dirty doing it.
"You have completed the resident's request. That is one less threat for Alcamoth now."