So I want to do adventure but it won't let me, is it because I didn't do the campaign mode?

if the game is too hard for you uninstallation is the best choice

Bump

To unlock adventure mode, you need to have completed all act in campaign mode.

not exactly true

to have acess to advnture mode u need to kill malthael on campaign

so have some1 that have the quest make a game on malthael kill quest n then he invites u n kill him

LOL

But not helpful at all... try finshing campaing

it's the best advice in this thread though