GRIME II 100% Achievement Guide: The Ultimate Completionist Walkthrough

If you’ve spent even a few hours in GRIME II, you already know this isn’t just another metroidvania—it’s a brutal, beautifully weird test of patience, timing, and curiosity. As someone who chased every last achievement (yes, including that one), I can tell you: getting 100% is absolutely doable, but only if you play smart.

This isn’t a sterile checklist. This is the roadmap I wish I had before I locked myself out of a boss on my first run.

First Things First: What You’re Getting Into

Short version: This game respects your skill—but punishes your impatience.

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Phase 1: Learn to Absorb or Die Trying

The entire combat system revolves around Absorb timing, and early on, this decides whether your run will be smooth or miserable.

Priority Achievement: The Ultimate Predator

You need to absorb every Prey type in the game. Sounds simple—until you realize some enemies appear once or twice.

• Don’t rush areas
• If something looks new, absorb it immediately
• Check your Bestiary often

Master the Parry

The achievement Perfect Symmetry requires 50 perfect absorbs, and you won’t accidentally unlock it.

• Practice in early zones with predictable enemies
• Focus on timing, not aggression

Personal tip: Treat every fight like a rhythm game. Once it clicks, everything becomes smoother.

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Forms: Don’t Spread Yourself Too Thin

You’ll unlock multiple Resonance Forms, but upgrading all of them early is a mistake.

• Focus on 3–4 Forms max
• Fully upgrade them first
• Build around your playstyle

Phase 2: Exploration Will Break or Save Your Run

This is where most players fail their 100% attempt. Hidden areas equal achievements, and missing them often means replaying the game.

Key Missable Locations

• Shattered Gallery — Hidden under a breakable floor and contains a missable boss
• Veins of the Earth — Requires Grapple ability to access
• Silent Workshop — A difficult platforming area tied to an achievement

Breath Shards (All 12 Required)

These are tied directly to the true ending and must all be collected.

• Look for enemies with a red aura
• Expect mini-boss encounters
• Explore off-path areas thoroughly

Phase 3: Bosses – The Real Skill Check

There are 12 mandatory bosses and 8 optional bosses, and all of them are required for full completion.

Hardest Optional Bosses

Echo of the Mother

• Mimics your last attacks
• Punishes repetitive play
• Use slow and deliberate hits

Bound Abomination

• Heavy armor mechanic
• Requires Pulse timing to break defenses
• Focus on survival before damage

The One Boss You Can Miss Forever

Molded Sentinel

If you progress too far into the main story, this boss disappears permanently. Make sure to clear its area before late-game events.

Phase 4: Endings

There are three endings, and all are required for 100% completion.

Ending A: Neutral

• Complete the main story
• Ignore specific NPC questlines

Ending B: Bad Ending

• Choose Surrender

Ending C: True Ending

• Collect all 12 Breath Shards
• Complete full NPC questline
• Obtain hidden item
• Choose Resist
• Defeat secret final phase

Tip: Backup your save before the final boss to unlock all endings in one playthrough.

Phase 5: Cleanup Achievements

Most Annoying Achievements

Lore Seeker

• Collect 40 lore tablets
• Some are invisible

Flawless Execution

• Defeat a boss without taking damage
• Best done in New Game+

Weapon Upgrade

• Limited upgrade materials per run
• Plan upgrades carefully

Missing Enemy Problem

The most commonly missed Prey is a small crawler hidden in ceiling paths. Check vertical tunnels and hidden areas carefully.

Final Boss Tips

This fight tests everything you’ve learned.

Phase 1 — Focus on absorbing projectiles to restore resources

Phase 2 — Stay mobile as the arena collapses

Phase 3 (True Ending) — Reflect attacks instead of using weapons

This final phase feels completely different and is one of the most memorable parts of the game.

Final Thoughts

Getting 100% in GRIME II isn’t just about skill—it’s about awareness. You need to pay attention to the world, respect enemy design, and think before progressing. The game doesn’t guide you, but that’s exactly why completion feels so rewarding.

If you approach it carefully and stay patient, that final achievement won’t feel like a checklist item—it will feel earned.