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The Binding of Isaac: Rebirth Achievements

Official Steam achievement definitions and latest reported global unlock rates, ordered from rarest to most common.

Total achievements641

Rarest rate2.60%

Ultra rare0

Last checkedSep 20, 2026

Delayed official data

Rates and award counts were last observed on Sep 20, 2026.

221

Butter

Unlocked a new item.

Rare

12.7%last reported global rate

222

Star of Bethlehem

Beat the Void with Bethany.

Rare

12.7%last reported global rate

223

Hot Potato

Unlocked a new challenge.

Rare

12.8%last reported global rate

224

Stem Cell

Unlocked a new item.

Rare

12.8%last reported global rate

225

The Fettered

No public description is available.

Rare

12.8%last reported global rate

226

The Miser

No public description is available.

Rare

12.8%last reported global rate

227

Alabaster Box

Complete the Dark Room with Bethany.

Rare

12.9%last reported global rate

228

Bound Baby

No public description is available.

Rare

12.9%last reported global rate

229

Glowing Baby

Defeat Mega Satan with Bethany.

Rare

12.9%last reported global rate

230

Rock Bottom

Complete Boss Rush with Jacob and Esau.

Rare

12.9%last reported global rate

231

The Stairway

Complete the Cathedral with Jacob and Esau.

Rare

12.9%last reported global rate

232

ZIP!

Unlocked a new item.

Rare

12.9%last reported global rate

233

Double Baby

Beat the game in Hard mode with Jacob and Esau.

Rare

13.0%last reported global rate

234

Karma

Unlocked a new item.

Rare

13.0%last reported global rate

235

Noose Baby

Unlocked a new item.

Rare

13.0%last reported global rate

236

Sticky Nickels

Unlocked a new item.

Rare

13.0%last reported global rate

237

The Curdled

No public description is available.

Rare

13.0%last reported global rate

238

Beth's Faith

Complete Boss Rush with Bethany.

Rare

13.1%last reported global rate

239

Book of the Dead

No public description is available.

Rare

13.1%last reported global rate

240

The Savage

No public description is available.

Rare

13.1%last reported global rate