Fight Monsters with Monsters

Kim Han-ul dreamed of becoming the world’s greatest Hunter. But blocked by the insurmountable wall of talent, he’s stuck as a lowly E-Rank Hunter, barely making ends meet as a gaming streamer. One day, his go-to tower defense game announces its sudden end of service. As a final send-off, Han-ul challenges the legendary 700th wave... a notoriously impossible stage no player has ever beaten and miraculously clears it. In that exact moment, a blinding light consumes him, and he undergoes a Second Awakening! He finally has his hands on a top-tier skill. This is his chance to rise the ranks and make his Hunter dreams a reality! But wait... something feels off. As he tries to test out his newfound power, the monsters he summons are completely different from the badass creatures he expected...?! — Description from novelcodex.org