The battle against Odin was completely one-sided, but as Alex was doing this to make a statement and not humiliate the most respected guild, he did put up some struggle even though he could have ended the battle with just his sword in mere moments.
Alex used his chaos manipulation and his enhanced control over the element to create tendrils that ripped apart any elemental attack thrown at him while he showed his skills with the sword.
Odin, seasoned by years of battles, recognized that Alex wasn't using his full strength as, within a few clashes of their weapons, he realized his inferiority in all aspects of strength.
Yet the man had a wide smile on his face like he was enjoying every moment of the battle, not showing any anger or desperation Alex expected from a prideful figure like him after he figured that battle was lost cause.