- Unlock strategy: Prioritize completing post-it notes on hard mode for all characters to save time.
- Dead God requirement: You must unlock all 637 the binding of isaac repentance achievements to achieve completion.
- Key challenge rewards: Complete specific challenges early to unlock powerful runes and items like Jera.
- Alt path progression: Defeat Hush three times to unlock the alternate paths required for Mother runs.
The Binding of Isaac Repentance Achievements Progression Roadmap
Unlocking all the the binding of isaac repentance achievements is the ultimate test of skill, patience, and game knowledge. With the release of the Repentance DLC, the total number of achievements expanded to 637, requiring players to explore multiple branching paths, defeat extremely difficult bosses, and complete complex challenge runs. Navigating this vast amount of content requires a structured approach to avoid wasting dozens of hours on redundant runs.
Video Highlights:
- Overview of achievement progression and character unlock priorities
- Strategies for managing difficult completion marks
- Tips on handling RNG and item pools during runs
To make this massive journey manageable, players should divide their progression into distinct phases. Earning basic completion marks early allows you to unlock powerful items that will carry you through the much harder challenges later in the game. The table below outlines the core categories of achievements and their general difficulty levels.
| Category | Hard Mode Required | Estimated Difficulty | Key Unlocks |
|---|---|---|---|
| Basic Bosses | No | 2/5 | D6, It Lives, Cathedral |
| Alt Path Bosses | Yes | 4/5 | Mother, Beast, Tainted Characters |
| Challenges | No | 3/5 | Runes, Card Mimic, Death Touch |
| Mega Satan & Delirium | Yes | 5/5 | Godhead, Mega Blast, Abyss |
Starting with normal progression before attempting the alternate paths prevents players from becoming overwhelmed. Focus on unlocking the core utility items first, as they will appear in future item pools and make difficult runs far more consistent.
Always play on Hard Mode from the very beginning. Earning completion marks on Normal Mode forces you to replay those same bosses on Hard Mode later, effectively doubling your total playtime.
Conquering the Most Difficult Achievements
Certain achievements stand out due to their extreme difficulty or the specific restrictions they place on the player. These milestones often require completing post-it notes for high-risk characters like Tainted Lost, Jacob and Esau, or Tainted Jacob. Managing these characters requires a deep understanding of their unique mechanics and how to build around their inherent weaknesses.
| Achievement | Character | Target Objective | Unlock Reward |
|---|---|---|---|
| Dead God | Any | Complete 100% of the game | Dead God |
| Death Certificate | Tainted Jacob | Complete all completion marks | Death Certificate |
| Godhead | The Lost | Complete all hard mode marks | Godhead |
| Mega Mush | All Normal Characters | Complete all hard mode marks | Mega Mush |
To tackle these high-difficulty milestones, players must master specialized strategies for the game's toughest characters. The following grid outlines the core strategies for the three most challenging character selections in the game.
Tainted Lost Strategy
- Avoid self-damage items
- Focus on defensive cards like Holy Card
- Prioritize high-damage tear multipliers
Jacob and Esau Management
- Keep characters close together
- Balance health items between both
- Optimize double bomb placements
Tainted Jacob Tactics
- Use Dark Esau as a weapon
- Keep moving in circular patterns
- Utilize Anima Sola to freeze threats
Tainted Lost is particularly challenging because he cannot obtain standard defensive items like Holy Mantle or Dead Cat through normal item pools. Players must rely on the character's built-in mechanic that rerolls low-tier items into higher-quality offensive items. The goal is to defeat bosses before they have a chance to overwhelm you with complex attack patterns.
Playing Tainted Lost prevents items with HP up or revive mechanics from appearing. Focus entirely on offensive power and defensive shields like Book of Shadows.
Step-by-Step Path to Dead God
Achieving full completion requires a systematic approach. Follow this structured progression path to optimize your efficiency and unlock items in the most logical order. This minimizes the time spent repeating runs and ensures you unlock the best items early.
Defeat Mom and Mom's Heart
Focus on defeating Mom's Heart 11 times to unlock It Lives. This opens up the Cathedral and Sheol paths consistently, allowing you to choose between Heaven and Hell routes.
Unlock the Alt Path
Defeat Hush 3 times to unlock the Alt Path. This allows access to the Downpour, Mines, and Mausoleum floors required for the Mother boss fight.
Unlock Tainted Characters
Reach the Beast boss fight by taking the Polaroid or Negative to the Depths II, initiating the Ascent, and using the Red Key in Home.
Complete the Post-It Notes
Earn all 12 completion marks on Hard Mode for all 34 characters (17 normal and 17 tainted) to secure the final item unlocks.
Each step of this path introduces new mechanics and item pools. It is highly recommended to take breaks between grinding completion marks for difficult characters by completing some of the standard challenges. This keeps the gameplay fresh and unlocks useful runes that can save run attempts later on.
Do not forget to touch and pick up every single unlocked item at least once. Simply unlocking an item does not count toward the achievement list until it has been collected in a run.
Essential Challenges to Complete Early
The game features 45 unique challenges. While some are purely for fun, many unlock critical items and runes that make completing subsequent runs significantly easier. Completing these challenges early ensures that these powerful items are added to your item pools as soon as possible.
| Challenge Number | Challenge Name | Special Restriction | Unlock Reward |
|---|---|---|---|
| Challenge 2 | High Brow | Randomized items | Jera Rune |
| Challenge 17 | Waka Waka | Anti-Gravity tears | Death's Touch |
| Challenge 19 | The Family Man | Blindfolded gameplay | Epic Fetus |
| Challenge 34 | Ultra Hard | Heavy curses active | Samson Healthy |
Completing challenges early dilutes the item pool with high-tier items, making your standard character runs more powerful and consistent. For example, unlocking the Jera rune allows you to double all pickups in a room, which can break the game's economy when paired with the right items.
If you struggle with Challenge 45 (DELETE THIS), look for items that trigger passive chest spawns or direct damage effects upon clearing a room.
Endgame Achievement Checklist
Track your progress toward the final milestones. Use this checklist to ensure you have met the core requirements for completing the game's achievement system. Reaching these milestones will signal that you are approaching the final stages of the game.
Dead God Requirements:
- Unlock all 34 playable characters
- Complete all 45 challenge runs
- Fill out all post-it notes on Hard Mode
- Collect every item at least once in a run
- Unlock all secrets and endings
Once these milestones are met, you will need to perform a final sweep of the item pools. This involves starting runs as characters with high starting items, like Eden, to quickly find and touch any rare items that you have unlocked but never actually collected during a standard run.
Once all checkmarks are met, the game will replace the save file image with the Dead God graphic, indicating 100% completion.
Frequently Asked Questions
Here are the most common questions players ask when attempting to unlock all achievements.
Review these common scenarios to troubleshoot missing unlocks or progression blocks during your runs.
Q: Do seeds disable the binding of isaac repentance achievements?
Yes, using seeded runs disables all achievements and completion marks. You must play unseeded runs to make progress.
Q: What is the fastest way to unlock Tainted characters?
Leave a trinket in a Boss Room or Treasure Room during your descent. During the Ascent phase, it will transform into a Cracked Key, allowing you to unlock the Tainted character in Home.
Q: Why am I not getting achievements despite completing the requirements?
Ensure that you do not have active mods enabled before defeating Mom for the first time. After defeating Mom once, mods can be enabled without blocking achievements.
Q: Do daily runs count toward achievements?
Yes, there are three specific achievements tied to Daily Runs: Dedication, Marathon, and The Pill. These must be completed online without mods.