If you’ve been exploring every corner of 99 Nights in the Forest, you might have already unlocked a good number of achievements. But did you know there are several hidden ones that don’t appear in the in-game tracker until you complete them? In this article, we’ll walk you through 15 hidden achievements and the methods to unlock them—some are straightforward, while others require a bit of strategy and luck.

Whether you’re a completionist or just looking for an extra challenge, these hidden achievements add an exciting layer to the game.

1. Tree Whisperer

How to unlock: Stand completely still under a Great Oak during a storm for 60 seconds.
This might sound simple, but timing the storm can be tricky. Look for areas where storm clouds consistently roll in.

2. Silent Night

How to unlock: Complete an entire night without making a sound, using only stealth.
Avoid sprinting, jumping, or combat. Use silent gear and take the long routes through foliage.

3. Cold-Blooded

How to unlock: Survive the frost event without using a campfire.
Equip cold-resistant armor and use consumables to keep your temperature stable.

4. The Lost Signal

How to unlock: Activate the radio tower in the northern sector at exactly midnight.
Many players miss this due to the precise timing. Check the in-game clock and bring fuel.

5. Spirit Negotiator

How to unlock: Calm a wandering spirit without using a charm or weapon.
This requires the "Soothing Voice" passive and proper dialogue choices. Not every spirit is hostile—some just want to talk.

6. Beastmaster’s Pact

How to unlock: Tame a Night Stag during a blood moon.
You’ll need rare bait and a full animal empathy skill tree. Be patient—these creatures don’t show up often.

7. Underground Explorer

How to unlock: Discover all 5 hidden underground caverns.
Some are blocked by vines or rocks, so bring tools. One entrance is cleverly disguised as a collapsed shrine.

8. Echo of the Past

How to unlock: Listen to 3 full spirit memory recordings in a single session.
You’ll need to track these down in remote ruins. Look for glowing blue markers that hum quietly.

9. Fireproof

How to unlock: Escape a burning forest zone without taking any fire damage.
This is about route memorization and speed. Equip light armor and prioritize movement boosts.

10. Duelist’s Pride

How to unlock: Defeat an elite enemy using only parries and counters.
This one is tough—practice your timing and choose your target wisely. Avoid group fights.

11. The Collector’s Secret

How to unlock: Collect all 12 bone relics and place them on the Forgotten Altar.
These relics are scattered and often guarded. A good way to track them is to explore each biome thoroughly.

12. Midnight Sacrifice

How to unlock: Complete the Forbidden Ritual quest without summoning help.
You must face all summoned enemies solo. Prepare healing items and make sure your loadout is optimized.

13. The Clean Hunt

How to unlock: Hunt a Shadowfang without taking damage or using traps.
Use ranged weapons and target weak points. It helps to level up your critical hit rate.

14. Ghost Runner

How to unlock: Travel from the southern village to the northern cliffs in under 10 minutes without engaging any enemies.
Plan your route in advance. Use stamina boosters and avoid encampments.

15. True Survivor

How to unlock: Complete the game on Nightmare difficulty with no deaths.
This is the ultimate challenge. Only recommended once you’ve mastered combat, crafting, and resource management.

Bonus Tip: Prepare Properly for the Challenge

Some of these achievements—especially the late-game ones—are much easier if you’ve upgraded your gear or stocked up on essential items. If you’re running short on resources, you might consider options to buy 99 Nights in the Forest diamonds to speed things up. Sites like U4GM often offer cheap 99 Nights in the Forest diamonds that help you stay competitive without spending too much time grinding.

Remember: these achievements are about creativity and mastery. Don’t rush them. Enjoy the process, experiment with different builds, and keep an eye out for unusual interactions—99 Nights in the Forest rewards those who think outside the box.