Stirring The Hornet Nest
"I seem to stir the hornet nest this time, hahahaha!" seeing the far distanced battles and new stronger monsters didn't let him down. Instead, he felt more amused by such a situation, hoping to draw more monsters here.
He knew the exit was where most of the monsters were. He also didn't believe such an exit was movable and would follow monsters wherever they went.
In return, the exit was fixed, like a portal or something. And the reason why the exit was where most of the monsters were, was thanks to their duty to protect it, nothing more, nothing less.
So by drawing more monsters here, he'd leave the exit region here undefended. All he needed to do now was to look for this portal, and he got an idea about where it was.