Achievements

*For tips and strategies on completing achievements, see achievement tips.*

**Achievements** are unlocked after completing Challenges, reaching certain milestones, achieving hidden goals, or unlocking certain items. In the PC version, every Steam achievement exactly corresponds to one secret in-game, whereas only a handful of secrets are represented by PSN trophies in the PlayStation version of the game.

If Isaac is unable to unlock achievements, a small icon of a crossed-out trophy  will be displayed below the Key's counter. Conditions which can disable the ability to unlock achievements include:

* Using a pre-determined seed.  Certain cosmetic and difficulty-increasing special seeds will still allow unlocks.
* During a Challenge, although the achievement for completing the challenge is unaffected.
* During a Daily Challenge, although the achievement associated with this game mode are unaffected.
* Playing with any enabled mod (unless Mom has been beaten).
* During Victory Laps.
* If the Debug Console is enabled (unless Mom has been beaten).

Rebirth has a total of 178 unlockable secrets.  Afterbirth added 98 new secrets, for a total of 276.  Afterbirth † added 63 new secrets, for a total of 339.  Booster Pack #5 added 64 new secrets, for a total of 403.  Repentance added 237 new secrets, for a total of 640.

At the stats screen, pressing Alt + F2 will sync unlocks with Steam achievements. If Isaac has Steam achievements for secrets that haven't been unlocked in-game, they will be unlocked by doing this.

## Trivia

* Each achievement is color-coded based on the requirements for unlocking their respective secrets:
	+ Tan: Miscellaneous unlocks
	+ Tan with blood stain: Mom's Heart/It Lives! Hard Mode unlocks
	+ Olive-Green: Character unlocks
	+ Dark Red: Mom's Heart/Womb ending unlocks
	+ Grey: Isaac unlocks
	+ Black: Satan unlocks
	+ Dark Blue: ??? unlocks
	+ Purple: The Lamb unlocks
	+ Pale Green: Boss Rush unlocks
	+ Pale Blue: Hush unlocks
	+ Orange Yellow: Greed Mode unlocks
	+ Orange Yellow with blood stain: Greedier mode unlocks
	+ White: Delirium unlocks
	+ Red: Mega Satan unlocks
	+ Bright Yellow: All Hard Mode marks (most are tan)/Damageless floor/100% unlocks
	+ Brighter Yellow: Greed Donation Machine unlocks
	+ Bluish Purple: Challenge unlocks
	+ Dark Green with bloodstain: Mother unlocks
	+ Orange: The Beast unlocks
	+ Bright Purple: Tainted Character unlocks
* Despite being a Boss Rush unlock for  Lazarus, 's achievement color is bluish purple, a color normally used for challenge-related unlocks.
* Achievements 37-41 and 83 have a typo on their pop-ups, and read "achieveved".
* Despite unlocking , achievement 310 is named "Locust of Wrath".
* Although not technically an achievement, getting 1000000% for all 3 save files will result in a special 3,000,000%!!! graphic on the save file selection screen.
	+ In Repentance, something similar happens when achieving Dead God on all 3 save files.
* The 5 Nights at Mom's achievement is a reference to Five Nights at Freddy's.
* The Mr. Resetter achievement may be a reference to Mr. Resetti from the Animal Crossing series.
* The Something Wicked This Way Comes quote is most likely a reference to the same quote from one of the witches from Shakespeare's play "Macbeth."
* Booster Pack #5 added 64 secrets. Interestingly, this is a single secret more than Afterbirth+'s original count of 63 secrets. Thus, this update more than doubled the amount of secrets added to the game.

PS4  Achievements 340-348 don't exist in the PS4 version, resulting in the content already being "unlocked" even on new save files.

* Achievements 638 to 640 are currently part of the Online Co-op beta and are not available in the base game and are not yet added to Steam. Achievement 640 is not even implemented and not obtainable in the beta.

* Despite having no achievement description normally, if the player attempts to showcase the Dead God achievement on their Steam Profile using the Achievement Showcase element, a small description will pop up that reads "NEW\_ACHIEVEMENT\_22\_16\_DESC".

## References

1. ↑ https://www.reddit.com/r/bindingofisaac/comments/4wkzdd/ps4\_challenges\_trophy\_glitch/