Resourceful Rat

NPC

The Resourceful Rat is an NPC who will steal armor, ammo, items, and guns left on the floor if the player leaves the room without picking them up. Health, blanks, keys, and Hegemony credits will never be stolen by the Rat.

The Resourceful Rat can be shot as he is in the act of stealing items left on the floor. He will call the player a "Jerk!" and run off only to come back later and steal it again. After being shot at, he will wait for the player to get farther away before returning to steal the item.

If the player takes a shortcut to the second chamber onwards, the Resourceful Rat will appear in the elevator room and offer the player three free guns. These guns will not change unless the player completes a floor after taking an elevator.

• In the Gungeon Proper, the guns are , and one of the three guns can be taken.
• In the Black Powder Mine, the guns are , and one of the three guns can be taken.
• In the Hollow, the guns are , and two of the three guns can be taken.
• In the Forge, the guns are , and all three guns can be taken.

Notes

• Unlocking certain weapons (by buying them or meeting their unlock requirements) can change one or more weapons, but not always.
• The Resourceful Rat will not steal Master Rounds.
  • He will, however, steal the Bullet That Can Kill The Past.
• The Resourceful Rat can not steal Armor or Ammo when it's held behind a pad lock.
• If the player collects the Resourceful Sack, the Partially Eaten Cheese, the Rat Boots, and the Elimentaler, they become the Resourceful Rat. This prevents items from being stolen when they're left behind in rooms.
• The weapons that the Rat provides on Chambers 2, 3, 4, and 5 will not change until any boss from chambers 2, 3, 4, 5 is defeated after using an elevator.
  • Starting a new run from Chamber 1 and defeating a boss in Chamber 2 will not change the selection of starting guns.
  • Starting a run from Chamber 2, 3, 4, or 5 and defeating a boss in any of those chambers will change the selection for Chambers 2, 3, 4, and 5.
  • The player can steal from the Resourceful Rat. Doing so will still give the player curse, and will count towards unlocking the Shelleton Key. The player will not be able to get any more weapons if there are any remaining.

Boss

Resourceful Rat
Ammonomicon Entry
Master Thief
This mysterious Gungeon menace styles himself "The Resourceful Rat," and is surely the biggest annoyance the Gungeon has ever seen. Living for the spite of Gungeoneers, and thriving by stealing their loot, this rat has accumulated a hoard of Gungeon artifacts. Having made a home for himself below the Oubliette, the Resourceful Rat utilized the Gungeon's ever changing layout to construct a maze to frustrate Gungeoneers seeking vengeance.

Resourceful Rat is a boss added in the Advanced Gungeons & Draguns Update, found at the end of the maze in the Resourceful Rat's Lair.

Behavior

The Resourceful Rat has three phases.

Phase 1

• Throws stationary mousetraps around the arena which will damage the player if they step on them.
• Rapidly fires cheese outwards in a spiral.
• Stands in the center of the room and summons three waves of cheese slices that travel from the edges of the room towards him, then sends another burst of cheese outwards.
• Fires extremely fast-moving kunai towards the player.
• Summons a long whip of bullets spanning the entire room and spins it several times.
• Occasionally, poison will leak from one of the grates near the corners.

After the first phase is defeated, a hole will appear in the center of the arena. The player must fall down the hole to reach the second phase.

Phase 2

In this phase, the Resourceful Rat pilots a stationary mech and has a new set of attacks. The two weapon systems on the mech's shoulders can be damaged and destroyed, exchanging some of its attacks for different, easier ones.

• Fires four erratically moving non-damaging lasers that leave trails of fire. Bullets spawn periodically from the trails.
• Fires a damaging laser that sweeps across the room and leaves a trail of fire.
• Spawns many rat-shaped Spent.
• Fills the room with rings of bullets that continually move in circles. The ring that the player stands in will frequently close in on the player. The gunjurer used to summon this attack will be kicked out afterwards, disappearing when it hits the floor.
• Jumps to spawn three waves of bullets that travel outwards.
• Fires a barrage of missiles that curve towards the player and burst into bullets upon hitting a wall. This attack can’t be used if the mech's drum clip is destroyed.
• Fires a group of bullets in a cross hair formation that follows the player. After a while, it stops moving, and a large bullet drops onto the crosshair and bursts into a large ring of bullets that travels outwards. This can’t happen if the mech's cannon is destroyed.
• Sweeps its foot across the floor in front of it. The resulting scar in the ground will spawn several spreads of bullets outwards.
• If the player attempts to flank the mech, it will stomp, filling that side of the screen with bullets.

Phase 3

In this phase, the player faces the Resourceful Rat in a game of Punch-Out!!. The Resourceful Rat will drop various pickups, items, and guns whenever successfully hit, which can be picked up after the fight.

In this phase, the Resourceful Rat has three health bars of increasing difficulty that must be depleted in order to defeat him. Bold attacks can be interrupted when the rat flashes yellow in order to charge the player's super attack.

In this phase, if the player runs out of health or the timer runs out, the player will lose. The player will not die; the Rat will simply run away and leave a note. Any pickups the Resourceful Rat has dropped can be collected, including Rat keys.

Phase 3A

• A straight punch
• A taunt
• An uppercut

Phase 3B

• Three straights, then an uppercut
• A spin attack
  • This attack hits players while ducking. Must be blocked.
• Slinging off the back of the mech
• Healing with cheese
  • If the player attempts to interrupt this attack, the rat can counter if the player mistimes it.

Phase 3C

All attacks from 3B, plus:

• A spin attack that hits four times, and leaves the rat dizzy
  • A star can be obtained from punching during the attack's start-up
• Throwing an ammo box that can be punched back
• A brass knuckles wind up punch
  • A star can be obtained on the 2nd Wind-Up cycle of the punch

If the rat is knocked down with a super, he’ll swing with Casey before the next round.

If the player beats all three rounds, the Rat will give a speech, and his dead body can be kicked around.

Rat Keys

During this section of the fight the Resourceful Rat can drop special Rat Keys, which unlock various rewards in his Lair. Up to six Rat Keys can be acquired during the battle. In order to get all six, the player must KO the Rat with a 3-Star Super punch three times.

Notes

• When the Rat summons cheese to him during the first phase, it can all be destroyed once it combines in the middle by using Blasphemy.
• The combined cheese can also be sent out of the fight entirely with Casey.

Trivia

• The mech piloted by the Resourceful Rat in the second phase of his boss fight is modeled after Metal Gear REX from Metal Gear Solid. In that game, the protagonist Solid Snake battles his twin Liquid Snake while the latter is piloting Metal Gear REX and the two have a fist fight on top of it afterwards, much like the Punch-Out!! duel in the final phase.
• Upon defeating The Resourceful Rat's first phase, his Ammonomicon entry seems to be in his own wording. Upon defeating The Resourceful Rat's second phase, his Ammonomicon entry is updated to how it rightfully should be. The first entry reads as follows:

"This dashing thief is respected and feared throughout the galaxy, as the most accomplished and wealthy adventurer in the universe, and also the true High King of the Gungeon. His moniker refers both to his cunning and his near limitless resources, which he earned through countless successful attempts at conquering the Gungeon, though he has no regrets to slay. So mighty is he that pilgrims travel from across the stars to leave offerings in his glory, increasing the magnificence of his great hoard. Many have tried to best him in combat, and all have failed."

• Another entry states the following:

"This rat-creature never sought the Gungeon for its treasures, but instead found himself cast here upon the tides of fate. Born in the hold of a trading vessel, he was forced to steal for his family's survival, until a great tragedy befell his mischief. When the next ship docked, he escaped and found himself alone on this planet. Here he wandered, until finally coming upon the Gungeon. Stuck in its time loop, he made a nest and a name for himself while training daily. His martial prowess is undeniable, and in truth he likely possesses the skill to reach the Gun. During his trials, however, he found his calling: being an ass to Gungeoneers. The gun interests him not; in his eyes, he has no regrets, for he is King."

• This is similar to the speech he give before he dies, when his third phase is defeated.

• Dying to The Resourceful Rat yields one of several unique death messages, under the section labeled "Killed By":
  • Your very slow reflexes
  • Your sad lack of skill
  • Your head not being in the game
  • Your lack of commitment
  • Your misplaced ambition
  • Your hubris
  • Your pride
  • The Handsomest King
  • High Lord Gungeon
  • Someone better than you
  • The Richest Rat
• The disguise that he wears when greeting the player upon skipping to a floor resembles Bello the Shopkeeper.

Gallery

• 

  An older unused portrait for the Resourceful Rat back when his fight was cut.