To win the Campaign you only need to upgrade the Oak of Ages and fight a final, suprisingly easy Quest Battle against the Beastmen. In contrary to other campaigns, its completely unnessesary to expand in this campaign. Im going to go over my preferred Army comp and the general approach to the campaign.
In my opinion its one of the easiest in the game. In this guide im going to teach you how top win a normal Wood Elves Campaign on Very Hard or above.