How to Get the ‘Peace at Last’ Achievement in Clair Obscur: Expedition 33 (Simon Boss Guide)

by Sacheen · Published April 30, 2025 · Updated May 2, 2025

Here’s how to find and defeat Simon, the toughest boss in Clair Obscur: Expedition 33, and unlock the ‘Peace at Last’ achievement. Full strategy, location, and rewards inside.

🕊️ Clair Obscur: Expedition 33 – How to Unlock ‘Peace at Last’ (Simon Boss Guide)

If you’re a Trophy or Achievement hunter, you’ve probably run into the mysterious ‘Peace at Last’ goal in Clair Obscur: Expedition 33. This achievement is tied to defeating Simon, a secret endgame boss that’s tougher than anything else in the game — yes, even harder than the Endless Tower trials.

This guide will walk you through where to find Simon, how to prepare for the fight, and what to expect from one of the most brutal battles in the entire game. Spoilers ahead, so proceed with caution if you want to discover everything on your own!

📍 Where to Find Simon

You won’t even be able to find Simon until you’ve unlocked Esquie’s swimming ability, so make sure you’ve completed the main story and are fully geared up.

🧭 Simon’s Location:

Swim into the ocean between Sirene and Visages.
Look for a floating portal (no building or structure — just a portal in open water).
This will lead you to a hidden map called Renoir’s Drafts.
Explore it, and you’ll find another portal to The Abyss, where Simon awaits.

The map is fairly small, but don’t let that fool you — what lies beyond is anything but easy.

⚔️ How to Beat Simon – Full Strategy & Tips

Simon is a two-phase boss fight, and make no mistake — it’s meant to be a final test of everything you’ve learned. Here are the biggest things to know before diving in:

🩸 General Fight Breakdown:

Two Phases: Phase 1 ends with a cutscene. Phase 2 starts immediately.
No Checkpoints: Die in phase 2? Back to phase 1. Ouch.
HP-Wipe Attack: Simon can drop a party member’s HP to 1.
Remove From Battle: He can completely erase fallen allies, meaning you can’t revive them at all. If your core team goes down this way, consider restarting.

🧠 Advanced Mechanics to Watch For:

Parrying is Essential: In Phase 2, many attacks are doubled. Later on, they’ll be tripled. If your parrying is off, dodge to stay alive — but ideally, master the parry timing.
Cheater Pictos is a Game-Changer: Equip it on every party member if possible. It lets them take two turns in a row and costs 40 Lumina Points — but it’s worth every point.
Simon’s Ritual Attacks: Pay attention to animations. Some attacks are scripted and require specific responses like parrying sequences or reacting to visual cues.

🔥 Recommended Strategy – Maelle Build

One of the best ways to bring Simon down is by building Maelle for high-risk, high-reward burst damage:

Use Last Chance to bring Maelle’s HP to 1 and fully restore her AP.
Trigger Virtuose Stance, which amps up her attack power.
Equip At Death’s Door Pictos (increased damage at low HP).
Use Stendhal or Sword Ballet for massive single-target DPS.

This combo lets you nuke Simon during key windows — just make sure you keep her protected between bursts.

🎁 Rewards for Defeating Simon

If you make it through both brutal phases, here’s what you get:

🗡️ New Weapon for Verso: Simoso
📘 Simon’s Journal: A lore-rich item that also counts toward the ‘Follow the Trail’ achievement.
🏆 Achievement Unlocked: Peace at Last

Not only is it one of the hardest fights in the game, but it’s also one of the most rewarding — narratively and mechanically.

Simon is Clair Obscur’s ultimate challenge — a true test of your builds, strategy, reflexes, and patience. Be prepared to retry, refine your tactics, and possibly grind some Lumina Points for those high-cost Pictos. But once it’s over? That ‘Peace at Last’ trophy will feel so good.

Related Articles:

How to Get the ‘Peace at Last’ Achievement in Clair Obscur: Expedition 33 (Simon Boss Guide)

🕊️ Clair Obscur: Expedition 33 – How to Unlock ‘Peace at Last’ (Simon Boss Guide)