Tried using 3 'disposable' heros (not used for my usual Tower battle) to see how much quest points I can gain for free. After 10 battles at Tower level 1, Rufus was killed but not after I have gained max healing, max damage taken points for Guild quest. Damage deal was slightly over 4 mill only but the rest can be cleared to the max pretty easily in other mode of battle. Total Guild Quest point gain was 198 points from 10 battles