The Binding of Isaac: Repentance Steam Characters Unlock

Starting a fresh save file in The Binding of Isaac: Repentance on Steam can feel overwhelming. With hundreds of items, challenges, and characters to unlock, knowing where to focus your efforts can dramatically smooth out your journey to Dead God status. This guide helps you navigate the Binding of Isaac: Repentance Steam characters unlock order, prioritizing unlocks that make subsequent runs and character progression significantly easier.

While unlocking every character is a long-term goal, a strategic approach means focusing on specific characters and their associated item unlocks first. Many non-character unlocks also provide substantial benefits that make playing any character more manageable.

Beyond Characters: Essential Early Game Unlocks

Before diving deep into specific character unlock orders, several general unlocks provide immense value across all your runs, making the entire game easier. Prioritizing these early on will provide a solid foundation for your character progression.

Powerful Challenges and Their Rewards

Challenges often unlock some of the most impactful items and runes. Don't underestimate their power, especially in the early game.

• Rune Unlocks: Completing Challenge #2 (High Brow) for Jera and Challenge #3 (Head Trauma) for Ehwaz are highly recommended. Jera is a game-breaking rune that duplicates consumables and pickups, while Ehwaz creates trapdoors or crawlspaces. Challenge #6 (Solar System) for Perthro (a one-time D6 effect) is also valuable. Unlocking at least six runes stops weak "rune shards" from spawning, improving your consumable pool.
• Essential Items:
  • Algiz: From Challenge #8 (Cat Got Your Tongue), Algiz provides temporary invulnerability, excellent for tough boss fights or donating health.
  • Tech.5: Challenge #18 (The Host) unlocks this strong damage item.
  • Epic Fetus: Challenge #19 (The Family Man) grants this unbelievably powerful tear replacement.
  • Spirit Sword: Challenge #39 (Isaac's Awakening) unlocks this game-winning item, a top-tier angel room find.
  • Gold Bombs: Completing Challenge #23 (Blue Bomber) grants infinite bombs for the current floor, a massive utility boost.

Donation Machine Milestones

Both the shop and Greed mode donation machines offer critical unlocks.

• Shop Donation Machine: Aim for 600 coins to fully upgrade your shop, significantly improving item availability. While reaching 999 coins unlocks the powerful Stopwatch, the initial 600 coins offer the most immediate and consistent value. After 999, the machine can act as a bank.
• Greed Donation Machine: Early donations yield great results:
  • 2 coins: Unlocks Lucky Pennies, providing a chance for luck-boosting pennies.
  • 234 coins: Shopkeepers can have special eyes, increasing nickel drops when blown up.
  • 879 coins: Unlocks Holy Mantle for The Lost. This is a monumental unlock, making The Lost vastly more playable by giving him a protective shield at the start of each floor. This benefit also extends to other characters in specific scenarios (e.g., mirror dimension).

Soul Stones and Reverse Cards

These mechanics allow for strategic manipulation of item pools, as highlighted by community reports.

• Soul Stones: Unlocking specific soul stones (by defeating Boss Rush and Hush with their respective Tainted characters) can allow you to abuse the game's mechanics. If only a few are unlocked, only those can spawn. Prioritize Soul of Isaac (from Tainted Isaac) for its reroll potential, and consider Soul of Cain, Soul of Eden, Soul of Lilith, and Soul of Keeper for a strong, curated pool.
• Reverse Cards: Similar to soul stones, unlocking a select few powerful reverse cards ensures that when one drops, it's likely to be incredibly useful. Player experience suggests focusing on Reverse Judgment, Reverse Fool, Reverse Justice, and Reverse Lovers.

Prioritizing Character Unlocks for Easier Runs

Once you've established some foundational unlocks, focusing on specific characters will further enhance your game. Some characters unlock items that make other characters, or the game in general, much easier.

Isaac: The Foundation

Isaac is your starting character, and his unlocks are foundational.

• Mom's Knife: Defeat Satan with Isaac. This is arguably the strongest offensive item in the game and a must-have in the item pool.
• The D6: Defeat ??? (Blue Baby) with Isaac. The D6 is a game-changer, allowing you to reroll items in item rooms, shops, and boss rooms, significantly improving your runs. This is one of the most important early unlocks.
• D Infinity: Defeat Delirium with Isaac. This powerful dice item offers unmatched versatility for rerolling.
• Options?: Defeat The Beast with Isaac. A heavily underrated item that provides extra pickups and synergizes well with other items like Broken Modem.

Azazel: Early Game Powerhouse

Azazel is unlocked by taking three Devil Deals in a single run. He starts with flight and a strong short-range Brimstone attack, making him excellent for unlocking other items.

• Satanic Bible: Defeat Isaac with Azazel. This active item grants a guaranteed Devil Deal for each floor, providing consistent power.

Lilith: Familiar Fanatic

Lilith is unlocked by defeating Ultra Greed or Ultra Greedier with Azazel. She excels with familiars.

• Incubus: Defeat Hush with Lilith. Incubus is an incredibly powerful familiar that doubles your tear output.
• C Section: Defeat The Beast with Lilith. One of the best tear modifiers in the game, essentially granting homing, piercing, and duplicating fetus-like tears.
• Twisted Pair: Defeat The Beast with Tainted Lilith (unlocked by entering the secret closet with Lilith). This is a better version of Incubus and a top-tier item. Tainted Lilith herself is also considered a very strong character.

Blue Baby (???) and The Lost: Strategic Importance

• The D6 for Isaac: Defeat Isaac with Blue Baby. This is critical for Isaac's progression, as mentioned above.
• Eternal D6: Defeat Mother with Blue Baby. This gives The Lost his D6 equivalent, providing much-needed reroll utility.
• Holy Mantle (for The Lost): As mentioned, donating 879 coins to the Greed machine unlocks this. Do this before attempting serious runs with The Lost.
• Godhead: Get all Hard Mode completion marks with The Lost. While a challenging endeavor, Godhead is one of the most powerful aura items, granting tears homing and a damage aura. The Lost's other unlocks (Soul, Mind, Body, D100) are also solid.

Bethany: Book of Virtues and Revelation

Bethany is unlocked by defeating Mom's Heart/It Lives on Hard Mode with Lazarus without dying.

• Book of Virtues: Defeat Isaac with Bethany. This item synergizes with almost every active item, creating powerful wisps.
• Revelation: Defeat Mother with Bethany. A top-tier angel item granting flight, soul hearts (now removed in Repentance+ but still strong), and a powerful holy laser.

Jacob & Esau: High Risk, High Reward

Unlocked by defeating Mother, Jacob & Esau are notoriously difficult but offer some of the strongest unlocks.

• Rock Bottom: Complete Boss Rush with Jacob & Esau. An incredibly powerful item that prevents stat decreases, allowing for massive stat scaling.
• Birthright: Defeat ??? (Blue Baby) with Jacob & Esau. This item provides a unique, powerful buff for each character.
• The Stairway: Defeat Isaac with Jacob & Esau. A fantastic angel room item that spawns multiple angel items, capable of breaking runs.

Tainted Characters: Game-Changers and Their Unlocks

Tainted characters are unlocked by finding their "secret closet" on the Home floor after defeating Mother with their regular counterpart. Many of them offer extremely powerful, even game-breaking, unlocks.

• Tainted Isaac: The first Tainted character, his unlocks are some of the best in the game.

  • Glitched Crown: Defeat The Beast with Tainted Isaac. A D6 on steroids, cycling through options rapidly.
  • Spinown Dice: Defeat Delirium with Tainted Isaac. A powerful reroll item.
  • Mega Chest: Defeat Mega Satan with Tainted Isaac. A great chest variant.
  • Soul of Isaac: Defeat Boss Rush and Hush with Tainted Isaac. A superior reroll rune.

• Tainted Lilith:

  • Twisted Pair: Defeat The Beast with Tainted Lilith. As mentioned, this is a top-tier familiar.
  • Soul of Lilith: Defeat Boss Rush and Hush with Tainted Lilith. Grants a random familiar.

• Tainted Keeper:

  • Golden Pennies: Defeat Mega Satan with Tainted Keeper. These provide a significant upgrade to economy. Tainted Keeper himself is excellent for filling the regular donation machine.
  • Soul of the Keeper: Defeat Boss Rush and Hush with Tainted Keeper. Provides free money.

• Tainted Lost: While incredibly challenging, Tainted Lost offers one of the game's ultimate rewards.

  • Sacred Orb: Defeat The Beast with Tainted Lost. This item significantly improves the quality of items you encounter, making future runs much better.

The "When You're Ready" Unlocks and Those to Avoid

Many other characters offer useful, though perhaps not immediately game-breaking, unlocks. These can be tackled as you become more comfortable with the game.

• Cain: Unlocks Cain's Other Eye (a familiar) and Guppy's Eye (reveals chest contents).
• Eve: Unlocks Athame (enemies explode into black rings) by defeating Hush.
• Lazarus: Unlocks Compound Fracture (a budget parasite) by defeating Delirium.
• Keeper: Unlocks Keeper's Wooden Nickel (makes other Keeper unlocks easier) and Keeper's Sack (a fantastic item) by defeating Mother.
• Forgotten: Unlocks Bone Spurs and Brittle Bones.
• Tainted Lazarus: Unlocks Flip, a highly underrated item.
• Tainted Eden: Unlocks Soul of Eden and Wild Card (can copy active item effects).

Ultimately, The Binding of Isaac: Repentance is a game of discovery. While this character unlock order and item prioritization guide provides a roadmap for easier progression on Steam, remember that playing for fun is paramount. Strategic unlocking simply makes that fun more consistently accessible.

FAQ

What is the best character unlock order in The Binding of Isaac: Repentance Steam?

There isn't a strict linear order, but prioritizing characters like Isaac (for D6, Mom's Knife), Azazel (for Satanic Bible), Lilith (for Incubus, C Section), and Blue Baby (for Isaac's D6) early on provides significant advantages. Also, focus on general unlocks like Jera, Algiz, and Holy Mantle for The Lost.

Which early unlocks make the game easiest?

Focus on challenge unlocks like Jera (Challenge #2), Algiz (Challenge #8), Tech.5 (Challenge #18), and Epic Fetus (Challenge #19). Maxing out your shop donation machine (600 coins) and unlocking Holy Mantle for The Lost (Greed machine, 879 coins) are also crucial for overall game progression.

Should I unlock Tainted characters early in The Binding of Isaac: Repentance?

Yes, certain Tainted characters offer immensely powerful unlocks. Tainted Isaac (for Glitched Crown, Spinown Dice) and Tainted Lilith (for Twisted Pair) are highly recommended to unlock early once you're comfortable tackling Mother.

What are Soul Stones and why should I care about them?

Soul Stones are character-specific pickups with strong effects. By unlocking only a few of the best ones (e.g., Soul of Isaac, Soul of Cain, Soul of Eden, Soul of Lilith, Soul of Keeper), you can increase the chances of these powerful items appearing in your runs, making the Binding of Isaac: Repentance much easier.

Where can I find more information about The Binding of Isaac: Repentance?

You can visit the official Steam page for The Binding of Isaac: Repentance for more details about the game, updates, and community discussions.