Hazards

Alongside Enemies, Rooms often feature various environmental hazards that impede or harm the player, most often used to create puzzles and otherwise add an extra layer of pressure to the room. Hazards that fire bullets will generally fire more often on higher loops.

List of Hazards

Name	Behaviour and Notes
Spike	Damages the player on contact. Can be passed through. Disappears if all surrounding blocks are removed. Affected by Weatherproof.
Valve	Toggles certain hazards when shot. Can be activated by the player or certain enemy attacks.
Electrical Block	Shoots an electrical beam. Deactivates in cleared rooms, but will stay active in some shortcuts. Can be toggled with Valves. Affected by Weatherproof.
Ghost Lantern	Spawns Ghosts with each lantern only being able to spawn 1 Ghost at a time. Deactivates in cleared rooms, but will stay active in some shortcuts.
Fragile Block	Can be destroyed by player or enemy shots.
Fire	Damages the player on contact. Can be passed through. Can be extinguished with a bomb. Affected by Weatherproof.
Exhaust	Shoots fire bullets in cardinal directions. Has a chance to not shoot on Normal Mode. Can be toggled with Valves, turned off Exhausts don't emit fire particles.
Blast Block	Can be destroyed by player or enemy shots. Explodes when destroyed, damaging the player, enemies, and any destroyable blocks.
Portal	Teleports the player, enemies, and shots to the same colored portal. Enemies can shoot at the player and pathfind through portals.
Water	Slows down player, enemy, and projectile movement. Affects the behavior of some enemies. Destroys fire bullets and falling icicles. Water level lowers if the sides of its container are destroyed. Affected by Weatherproof.
Waterfall Block	Creates a waterfall below itself, which functions identically to water. Can be toggled with Valves. Waterfall is affected by Weatherproof.
Icicle	Falls down if shot by the player or if the ceiling it hangs on is destroyed. Deals damage to the player when hanging and to both enemies and the player when falling. Affected by Weatherproof.
Blue Moving Block	Moves along a linear path. Instantly kills enemies and deals damage to the player when crushing them against a different obstacle.
Blue Push Block	Can be pushed by player shots and certain enemy attacks. Instantly kills enemies and deals damage to the player when crushing them against a different obstacle.
Crusher	Will ram towards the player if they're in its line of sight, then slowly returns to its original position after hitting an obstacle. Can only travel in cardinal directions. Instantly kills enemies and deals damage to the player when crushing them against a different obstacle. Deactivates in cleared rooms, but will stay active in some shortcuts.
Peaspitter	Continuously shoots 3 bullets in a spiral pattern. Deactivates in cleared rooms, but will stay active in some shortcuts.
Fire Pipe	Shoots fire bullets upwards. Deactivates in cleared rooms, but will stay active in some shortcuts.
Chain Fragile Block	Can be destroyed by player or enemy shots. Destroys adjacent destroyable blocks and Sturdy Blocks when destroyed.
Switch Block	Switches between being tangible and intangible on a timer. Instantly kills enemies and deals damage to the player if it appears on top of them. Can be switched manually by Valves. Becomes permanently intangible in most normal rooms when the enemies are cleared.
Wires	Damages the player on contact. Can be passed through. Disappears if the block it's attached to is destroyed. Affected by Weatherproof.
Haunted Fragile Block	Shoots bullets at the player, otherwise works like a regular Fragile Block. Turns into a Fragile Block on cleared rooms, but will stay active in some shortcuts.
Lockstone	Gets destroyed when all Keystones in the room are killed.
Keystone	Can sometimes appear in rooms without Lockstones. Despite having no attacks, dealing no contact damage, and not being featured in the Bestiary, it is considered an enemy, meaning it can still possess Halos and Aegises.
Ghost Block	Can be destroyed by player or enemy shots. Spawns a Ghost when destroyed in an uncleared room. In some shortcuts can spawn Ghosts even if no other enemies are present.
Candle	Candle segments slowly burn up in uncleared rooms. Segments with a ghost on them spawn a Ghost when burned up, segments with a circle on them shoot 6 bullets around themselves when burned up. Burns up almost instantaneously in cleared rooms and special segments don't shoot/spawn Ghosts. The Fire on top functions identically to a regular Fire, but the Candle can be relit by shooting the top segment if the Fire is extinguished.
Green Moving Block	Moves along a linear path. Instantly kills enemies and deals damage to the player when crushing them against a different obstacle. Green Move Blocks which initially moved in the same direction move in sync as if they were part of the same structure, even if they aren't adjacent.
Green Push Block	Can be pushed by player shots and certain enemy attacks. Instantly kills enemies and deals damage to the player when crushing them against a different obstacle. All Green Push Blocks in the same room move in sync when any one of them is pushed.
Sturdy Block	Gets destroyed when adjacent Fragile Chain Blocks are destroyed, otherwise indestructible. Clusters of adjacent Sturdy Blocks get destroyed if any of the blocks in it are destroyed.
Regenerating Block	Can be destroyed by player or enemy shots. Regenerates after a few seconds when destroyed. Instantly kills enemies and deals damage to the player if it regenerates on top of them.
Shrapnel Block	Can be destroyed by player or enemy shots. Shoots a cluster of bullets when destroyed, some of which deal double damage on Hard Mode.
Bone Zone	Can be destroyed by player or enemy shots. Summons Bonelings on top of itself in uncleared rooms.
Small Dart Trap	Shoots a bullet horizontally at the player when the player passes it by. Needs to recharge after firing. Deactivates in cleared rooms.
Big Dart Trap	Shoots a gatling spray of bullets horizontally at the player when the player passes it by. Needs to recharge after firing. Deactivates in cleared rooms.
Firespinner	Shoots fire bullets in the cardinal directions upon first activating, then slowly shoots 4 fire bullets in a spiral pattern, alternating between regular and destructible bullets. Shoots only normal fire bullets in Hard mode. Stops shooting in normal rooms when there are no enemies present.
Slide Block	Slowly moves in the direction of the arrow when shot by the player from the opposite direction. All Slide Blocks that have the same direction move in sync. Almost exclusively featured only in puzzle shortcuts.
Block Destroyer	Annihilates Slide Blocks that move into it. Almost exclusively featured only in puzzle shortcuts.
Green Guardian Block	Whenever the player passes any Green Guardian Block, all of them will activate simultaneously. When activated, they shoot a long stream of bullets in every cardinal direction. Only featured in Trial II.
Purple Guardian Block	Shoots slow, homing bullets at the player. Only featured in Trial III.
Red Guardian Block	Shoots quick bursts of 5 bullets at the player when the player is within its line of sight. Only featured in Trial IV.
Blue Guardian Block	Repeatedly shoots bullets at the player when the player is within its line of sight. Featured only in Trial IV.
Spotlight	Turns Eye Blocks into enemies when intercepted. Enemies depend on the specific room the Spotlight is in. Only featured in Trial II.

Star of Providence
Basic Mechanics	Weapons	Pickups	Cartridges	Ships
Rooms	Shops	Floors	Hazards	Upgrades
Trials	Enemies	Challengers	Minibosses	Bosses
	Unlockables	Achievements	Jukebox