After reading one of the info topics about Warriors Orochi 2 which included some of dialogue from some of the characters, it got my imagination going and this is what I've come up with:

Taigong Wang (Zhang Jiya):

"Ha! Hook, line, and sinker!" - possibly after a successful ambush

"I've got bigger fish to fry." - after being defeated

Feel free to add some more of your own for any of the other characters.

Sun Wukong: "Where's your tail?"
Hideyoshi: "..."