achievement [ID] – Unlocks a specific achievement or item by its numerical ID.
A highly popular, browser-based tool where you upload your save file, click checkboxes for what you want to unlock, and download the modified file. It requires no installation. The Binding Of Isaac Repentance Save Editor
A save editor is a third-party tool (not made by Edmund McMillen or Nicalis) that allows you to directly modify your repentance.save file. Instead of grinding Greedier Mode for 50 hours, you can toggle achievements, add items, unlock characters, or even resurrect a dead save file. achievement [ID] – Unlocks a specific achievement or
For perfectionists, you can fill out the "Items" collection page. This marks items as "found," which is a hard requirement for earning the final completion achievements like Dead God . 4. Direct Stat Trackers A save editor is a third-party tool (not