If yoy have a kick ass character but is lacking life and musou then I have a good way to boost your life and musou up. Just repeatedly play Hu Lao Gate on allied forces side. When the stage begins kill the general guarding your forces gate, then wait for the ram to appear. Protect the ram until it destroys the gate. When the gate is destroyed, run up to the top of the gate (the stairs on on the side lu bu appears on) and there will be a life up +10 on one side and a musou up +10 on the other. This is how I got many of my characters maxed out. Hope this helps!