Exchanges
The two short exchanges said everything there was to be said.
Khan was an experienced warrior with incredible senses, so he knew. The mutated Thilku was no easy opponent. It wasn't only a fourth-level warrior. It also retained abilities dated prior to its mutation.
Khan stared at the lake before focusing on the mutated Thilku. He could devise a plan to kill the blue aliens before the main opponent, but his mana wanted more. He was the best. Khan knew that. Still, defeating such a strong enemy was the only way to prove it.
The mutated Thilku were relatively simple. Their overwhelming physical prowess matched Wayne's, but they also had incredible spells at hand.
It was safe to assume the current Thilku would have the same skillset. Yet, Khan had seen it move, and doubt arose. He could predict the alien's movements, but not in a way that would lead to victory.