Alexender

Every twenty years, the world of Tower Defense arrives to take away people and make them participate in the survival game. You can get unimaginable rewards if you can win. You can also inflict severe damage to your country if you lose.
Pierce finds himself in this world, and sent to the Tower Defense alone, while other teams have a hundred people. 
Fortunately, he awakens golden hint system. Not only can he see useful alerts, he can also discover the fatal weaknesses of his enemies. Every monster he takes down rewards him with top-tier prizes. While the other players are still struggling, he is already swinging his swords to take the lives of gods.

Atlas Studios

Tower Defense Survival: I Defend the Whole Country Alone!

AtlasStudios

[The seventh invasion is about to begin. All contestants, please prepare yourself to deal with the invading monsters!]

When he heard the announcement from the Tower Defense world, Pierce's eyes lit up.

'The invasion this time will be much more powerful than the previous times. I will obtain more things after I defeat it.'

Pierce was looking forward to the rewards he would receive for the difficulty of the default hell mode.

It was useless for him to guess why the hell mode was default for him. But, since that was the case, he might as well put up a good fight.

Pierce released Frost from his embrace and walked onto the city wall.

Vivier, who happened to pass by, saw this scene and couldn't help but pout.

She had also obtained information about the Tower Defense World, so she quickly followed Pierce to the city wall.

Frost, who now knew everything, thought of something, and the Elven Queen and the others followed as well.

Deep Ones!