Momento: How to Get 100 Percent Achievements (The Definitive Guide)

Getting 100 percent achievements in Momento is entirely possible in a single, meticulous playthrough. The key is understanding the game's structure, knowing which items are missable, and using a strategic save before the final choice to unlock all three endings without replaying the entire game. This guide breaks down all 24 achievements into a clear, room-by-room path to full completion.

The achievements fall into four main categories: automatic story progression, missable collectibles, specific puzzle solutions, and the three mutually exclusive endings. By following this route, you will systematically unlock everything the game has to offer.

01

The Optimal Route: One Playthrough, Three Endingstag

Your entire 100% run hinges on one critical moment. After solving the final puzzle in the Attic and interacting with the large, ornate clock, you will be presented with a final choice that dictates the ending. To get all three ending achievements (The Loop, Shattered, and Acceptance) in one go, you must create a manual save right before this interaction.

Here’s the process:

1. Play through the entire game, collecting all items and solving all puzzles as detailed below.
2. Upon reaching the Attic and solving the final sequence, STOP before making the final choice.
3. Create a manual save file. Let's call this your "Ending Save."
4. Proceed to make one of the three choices and watch the ending to unlock the first achievement.
5. Load your "Ending Save."
6. Make the second choice, watch the ending, and unlock the second achievement.
7. Load your "Ending Save" one last time to see the final ending and pop the last trophy.

This method is the absolute most efficient way to achieve 100% completion and avoids the need for two additional full playthroughs.

02

The Point of No Return & Key Collectiblestag

Momento is semi-linear, but certain actions can lock you out of rooms or prevent you from acquiring key items needed for achievements. The primary point of no return is ascending the stairs to the Attic. Before you do this, ensure you have collected the three hidden Clock Hands required for the Grandfather Clock puzzle, which is tied to the Horologist achievement.

These hands are scattered across the main areas of the house. Missing even one will void your 100% run.

• Brass Hand: Found in the Study, inside the locked desk drawer. You need to solve the globe puzzle (aligning the continents to match the map on the wall) to get the Desk Key.
• Steel Hand: Located in the Workshop. It's inside the small wooden chest that requires you to solve the music box puzzle first. The solution is the number sequence 5-2-4-1, found on a torn photograph.
• Gilded Hand: Hidden in the Gallery. After solving the projector puzzle, a hidden compartment opens behind the portrait of the family, revealing the final hand.

Solving the Grandfather Clock Puzzletag

Once you have all three hands, you can interact with the large Grandfather Clock in the main hall. Placing all three hands on its face and setting the time to 12:00 (as hinted by the stopped clocks throughout the house) unlocks the Horologist achievement and reveals the key to the Attic, your final destination.

03

Room-by-Room Achievement Walkthroughtag

Follow this sequence to ensure you miss nothing. Achievements are listed in the order you're most likely to unlock them.

The Study: Unlocking the Pasttag

This is the starting area. Your goal is to find a way out and uncover the first major story beats. The puzzles here are foundational.

1. A Faint Memory: Unlocked automatically upon starting the game.
2. Cartographer: Solve the globe puzzle by rotating its rings to match the world map hanging on the wall. This rewards you with the Desk Key.
3. Well Read: Interact with every single bookshelf in the Study. There are five in total. Make sure the interaction prompt disappears for each one.
4. A Forgotten Note: Use the Desk Key to open the locked drawer and retrieve the Brass Hand and a diary page. The achievement pops upon reading the page.

The Workshop: Mending What's Brokentag

This room focuses on mechanical puzzles and repairing broken objects, symbolizing the fractured memories you are piecing together.

1. The Tinkerer: Unlocked automatically upon entering the Workshop.
2. A Broken Melody: Find the Torn Photograph on the workbench. The numbers 5-2-4-1 are scrawled on the back. Use this code on the cylinders of the music box. This unlocks the box, rewarding you with the Steel Hand and this achievement.

1. Master of Gears: Solve the large gear puzzle on the wall. The goal is to arrange the gears from smallest to largest to power a mechanism that reveals a hidden compartment. Inside is a Memory Slide for the Gallery.

The Gallery: Facing the Truthtag

Here, you confront the more painful aspects of the past through visual storytelling. The puzzles are about light, shadow, and perspective.

1. An Artist's Eye: Unlocked automatically upon entering the Gallery.
2. Behind the Canvas: There are four paintings you can interact with. Behind one of them is a hidden switch. This switch adjusts the lighting, which is necessary for the main puzzle.
3. Light and Shadow: The central puzzle involves a projector and three Memory Slides (one is found in the Workshop, two are in the Gallery itself). Place the slides into the projector and align them to form a complete image of a family on the far wall. The combined image reveals three symbols: a Sun, a Moon, and a Star.

1. Treasure of the Past: Use the symbols from the projector puzzle (Sun, Moon, Star) to unlock the large, ornate chest in the corner of the room. This chest contains the Gilded Hand.

The Attic: The Final Ascenttag

After solving the Grandfather Clock puzzle with all three hands, you'll gain access to the Attic. This is the final area and the point of no return.

1. The Final Climb: Unlocked upon entering the Attic.
2. Full Circle: The final puzzle involves arranging memory fragments into a coherent timeline. Once completed, the final interaction becomes available. This is where you make your Ending Save.

04

Unlocking All Three Endingstag

With your save file ready at the final choice, you can now efficiently unlock the last three story-based achievements.

• The Loop: To get this ending, choose to "Reject the memory." This causes the cycle of grief to begin anew, returning you to the start. The achievement pops as the credits roll.
• Shattered: For this ending, choose to "Shatter the memory." This represents a violent, angry refusal to accept the past, leaving the protagonist in a state of brokenness. This is often considered the "bad" ending.
• Acceptance: The true and final ending. Choose to "Embrace the memory." This signifies coming to terms with the past, finding peace, and finally moving forward. Unlocking this achievement feels like the canonical conclusion to the story.

After unlocking all three, your achievement list should be at 100%.

05

Quick FAQ for Momento Completioniststag

How many playthroughs are needed for 100% achievements in Momento? Just one. By using a manual save before the final choice in the Attic, you can unlock all three endings without replaying the entire game.

Are there any difficulty-related achievements? No, Momento does not have difficulty settings. All achievements are tied to exploration, puzzle-solving, and story completion.

What is the most commonly missed achievement? Horologist is the easiest to miss. It requires finding all three Clock Hands (Brass, Steel, and Gilded) before heading to the Attic. If you miss one and proceed to the final area, you cannot go back, forcing another playthrough.

Do I need to find all the diary pages for an achievement? While diary pages provide crucial story context, only the first one you find in the Study desk is tied to an achievement (A Forgotten Note). The rest are optional for completionists who want the full narrative.

06

A Memory Worth Completingtag

Securing 100% of the achievements in Momento is less a test of skill and more a trial of thoroughness. It’s a short but dense experience where every puzzle and every hidden item feels deliberate. By following this guide, you can ensure your journey through this hauntingly beautiful game is a complete one, leaving no memory unturned and no stone un-shattered.