Larian Studios Forums Divinity - Original Sin Divinity Original Sin - Beta What are the benefits of having weapon levels?

They increase damage by 10% more each. 1 - 10% more damage, 2 - 20% more damage, etc.

You can see that in the description for each.

I do hope they will add more effects to weapon skills because there is no reason to invest more then 2 points in any weapon category now.

You do find better weapons as you play.