Metal Slug

[Dungeon import complete.]

[The Regular Army had been utterly insignificant in both consecutive suppression wars. The entire time, they had relied on the Peregrine Falcon Squad and Sparrow Squad—two elite squads with a total of four elite soldiers—to infiltrate behind enemy lines and carry out decapitation strikes, ultimately securing victory.

...Yet the Regular Army credited all of it to their own brilliance and might. They came to believe that as long as they deployed Peregrine Falcon and Sparrow branch squads around the world, they could easily eliminate every rebel force.

And you are special test subjects selected from the top-secret Super Soldier Experiment to become members of Peregrine Falcon and Sparrow branch squads...]

[Dungeon Blueprint: Metal Slug]

[Dungeon Modifiers: Faction Confrontation—players from different factions are permitted to kill one another without becoming red-named. Bloody Treasure Chest drop rates increase by one tier; in principle, players from the same faction are not permitted to kill one another. Kills will not drop Bloody Treasure Chests, and such actions will affect your faction standing.

Fantasy War—a near-future fantasy war setting. While it contains large quantities of modern weaponry, Black Technology and mysterious powers beyond scientific explanation may also appear. There are no restrictions on the use of skills or equipment.

Regular Army and Rebel Army—the Regular Army is not absolutely righteous, nor is the Rebel Army absolutely evil. Players who uncover the reasons behind it all will have more than one chance to change factions, while player actions will introduce even greater variables into this already chaotic world.

Ice and Snow—the average temperature of the area you must explore is minus 26 degrees Celsius. Please keep warm.]

[Dungeon Difficulty: D+]