- Description: Unlocked a new co-player baby.
- Unlock: Defeat Mega Satan as The Forgotten
- In-Game Secret Number: 403
|Description||Unlocked a new item.|
|Unlock||Participate in 31 Daily Challenges (they don't have to be consecutive; it will still count if you die in the first room)|
|In-Game Secret Number||325|
|Achievement Description|| |