Holytaboo (also known in-game as Furystar & Lanthius) has been creating a series of videos detailing the various quests throughout Serendia/Balenos/Calpheon and Mediah that reward full combat skill points, which if like many of us you are in desperate need of then check out the series and give it a like if it helps:

You can keep up to date with any further guides on his channel: