Shovel Knight
New Brutality Weapon: King Scepter. Mimic King Knight as you dash around and bounce on your enemies’ head.
New Shovel Knight Outfit.

Hotline Miami
New Brutality/Survival Weapon: Baseball Bat. Attack a stunned or rooted enemy to deal flashy critical damage.
New Modernized Bomber Outfit.

Katana Zero
New Tactic/Survival Weapon: Throwable Objects. Pick up whatever you can find on the ground and chuck it at your foes with all your strength!
New Zero Outfit.

Risk of Rain 2
New Brutality/Tactic Weapon: Laser Glaive. Throw a seeking glaive that bounces up to a certain amount of times for a certain amount of damage. Damage increases by a certain amount per bounce.
New Commando Outfit.

Terraria
New Brutality/Tactic Weapon: Starfury. Each melee hit summons a star targeting a nearby mob. Make them rain!
New Familiar Outfit.

Slay the Spire
New Colorless Power: Diverse Deck. This one’s a doozy to explain, bear with me here. The deck is composed of 4 different cards, each with a Draw, Passive and Discard effect. The current card has its Passive in effect permanently, press the power button again to Discard it and Draw the next one, triggering the corresponding effects.
New Ironclad Outfit.

How do I unlock all this beautiful content?

As you explore Prisoners’ Quarters, you might notice some new unusual rooms that don’t seem to belong here. Perhaps they shifted from another dimension ?

Legends say that finding and exploring those rooms will bring you glory and strength!.. as well as new tools to add to your arsenal.

We also heard that a strange, mysterious, might-be-full-of-hints book has appeared somewhere in Prisoners’ Quarters. However, its sayings look quite cryptic and incomprehensible…