In Binding of Isaac: Rebirth, Isaac seems to flash or glow white when he stands on certain floor patterns, such as spiderwebs. Does this mean anything?
The Binding of Isaac Rebirth – Why Does Isaac Glow on Spiderwebs?
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The Lost is meant to be the most secret and elusive unlockable character in the new Binding of Isaac.
The short version, with just the instructions to unlock the character, is under the spoiler:
You have to perform a sequence of specific deaths with 4 different characters at specific locations:
- Isaac has to be blown up by a Mulliboom in the Basement/Cellar;
- Maggie must blow herself up with a bomb in the Caves/Catacomb;
- Judas has to die stomped by Mom's foot in the Depths/Necropolis;
- Azazel must be killed by Satan in Sheol. The fight after the Fallen is guaranteed to work, it's still unclear if the second stomping phase works too.
The deaths have to happen in this order and any mistake (i.e. dying in another location, or with another character) will reset the sequence, so you'll have to start again with Isaac.
There's anyway a longer explanation tied to the character. The sequence of steps to unlock the Lost is not explained anywhere in the game and requires a long process to be discovered.
The puzzle pieces
The first step to the discovery starts with the Missing Poster trinket. This item apparently does nothing in terms of gameplay, but when dying in a Sacrifice Room (the empty ones with a single set of spikes at the center) while carrying it, you'll get a game over screen with a puzzle piece replacing the cause of death.
Solving the puzzles
There are 4 different puzzles and each one of them belongs to a different character. You can assign each piece to a different puzzle thanks to the little markers beside it:
These 4 puzzles, when completed, show the game over screen for the 4 characters and their cause of death. The task of the player, at this point, is to recreate these deaths with the appropriate characters.
Finding the Lost
Replicating the deaths is easier said than done. As said before, apparently it has to be done in a specific order to work and anything getting in the way resets the process. Some specifics are still unclear/being researched, but this are the best guesses at the moment:
- The order (specified in the spoiler) is important.
- Any death (or win) out of that order will reset the process. This means that picking up the Ankh - and probably any item that messes with your lives - while attempting to unlock the Lost is a big no-no.
- Resetting a run is allowed (long press R on PC). This gives you a little flexibility, with the possibility of restarting a bad run without losing the progress.
- It has to be done in a single session. (This was a speculation last time I checked, but it makes sense)
If you manage to successfully complete this task, you'll be greeted with this screen:
and you'll have a new character waiting for you at the starting screen.
Source: all the images and part of the informations are taken from this reddit thread. It started as a speculation/investigation thread about the puzzle pieces, but sadly the unlocking method leaked after being datamined, while the investigation was still running.
You must actually take damage to get loot from a Sacrifice room. You can walk on spikes as much as you want when you're invulnerable, but you won't get anything from it.
- Seed: Y7CN SD87 (adjacent to start are Holy Mantle and Sacrifice room).
- Video (shows Callus)
Best Answer
That glow means that your movement is slowed by the spiderwebs. You see the same effect when walking on white creep such as from the Widow boss and Black creep such as from the Gish boss.