NAIL

Developed country Keep at least 50 upper class for 12 days

Plaguelands Survive a year in Hard difficulty

Rich man's world Save 99,999 Pia

One True Utopia Complete "One True Utopia" event on Normal or higher

Steel Reign Operate 30 Ratrons

Shadowed City Reach the maximum level of the Umbran Circle

Purified City Reach the maximum level of the Purgon Order

Third Arrival Upper class appeared in the city.

Ratropolis Reach prosperity level 7

Ratopia Reach prosperity level 9

Electric Empire Supply electricity to the city for the first time.

Do You Believe? Have Ratizens follow a religion in the city.

Survive this? Escape from the Forgotten Ruins

No Honor! Conquer the Barbaric Palace

The Mummy Clear the King's Chamber

Pacifist Kill no enemies except bosses.

42 Die exactly 42 times during the whole game.

Armour Clad Absorb 1000 bullets with your shield.

Flamer Be careful when playing with fire.

Qualified Winner Complete the Qualified Winner I challenge

Winning Streak Complete the Winning Streak II challenge

Almost There! Complete the Almost There! I challenge