Milky Way Idle – Major Patch Notes (Dec 6, 2025): Achievements, Collection, Bestiary & More


Overview of the Major Patch

The December 6th, 2025 update for Milky Way Idle is one of the most content-heavy patches the game has received. It introduces three brand-new progression systems — Achievements, Collection, and Bestiary — while adding new rewards, leaderboard tracking, Steam integration, and quality-of-life upgrades that make progression smoother than ever.

Below is a complete breakdown of everything included in the update.


🏆 Achievements System

The all-new Achievements feature brings long-term progression and rewards to every part of gameplay.

Key Highlights

  • 73 achievements across 6 tiers of difficulty
  • Completing each tier grants permanent buffs
  • Fully synced with Steam achievements when using the Steam client
  • Players can now view achievement progress on other profiles
  • Most achievements are not retroactive
  • Ironcow-only: Elite/Champion tier item achievements are retroactive if you previously owned the required items

This system gives players new goals while rewarding consistent progression.


📦 Collection System

The Collection feature tracks the number of items you have gathered throughout your journey — and gives rewards as you reach higher milestones.

How It Works

  • Tracks all collected items
  • Earn Collection Points for collecting:
    • 1
    • 10
    • 100
    • 1,000
    • 10,000
      … and more
  • Reach certain point thresholds to unlock milestone rewards
  • Collection progress is now visible on the leaderboards
  • You can share items in chat by linking them

Important Notes

  • Marketplace/General Shop purchases do NOT count
  • Badge items and back-slot items are retroactive
  • Ironcow-only: rare items you own are retroactively added

This system rewards players who gather materials naturally through gameplay rather than buying them.


🐉 Bestiary System

Track your monster kills and receive rewards for defeating enemies in large quantities.

How Bestiary Works

  • Tracks kills for every monster
  • Earn Bestiary Points at kill milestones:
    • 1
    • 10
    • 100
    • 1,000
    • 10,000
      … and so on
  • Earn milestone rewards as points accumulate
  • Bestiary progress appears on leaderboards

Additional Mechanics

  • High-tier monsters count as extra kills (+1 per tier)
  • In party combat, kill credit is split among party members
  • Adds a new layer of grinding depth and leaderboard competition

🪞 New Item: Philosopher’s Mirror

A powerful new enhancement item:

  • Guaranteed 100% success rate when merging upgraded gear
  • Example:
    +13 item + +14 item + Philosopher’s Mirror → +15 item

This will become one of the most valuable end-game items for upgrading gear safely.


🤝 Community & Supporter Updates

  • Community buffs can now be purchased using supporter points

This gives supporters more ways to enhance their gameplay experience while strengthening the game’s community systems.


⚙️ Quality of Life Improvements

Several major QoL upgrades arrive in this patch:

Loadouts & Combat

  • Loadouts are now editable — no need to remake them from scratch
  • Combat triggers can be saved/loaded with loadouts
  • Added double confirmation when leaving party combat

UI & Navigation

  • Clicking your avatar opens a quick menu for faster access
  • Market listings now show all your listings, not just the top 20
  • Added real-time price warnings to help avoid overpricing (experimental)

These improvements streamline gameplay and reduce unnecessary clicks.


🐞 Bug Fixes

  • Fixed visual bug showing missing items in loadouts
  • Fixed various localization and translation issues

🎨 Other Updates

  • Custom cosmetic requests will no longer be accepted after Dec 31, 2025

📌 Final Thoughts

This patch brings massive progression systems, new ways to compete, and major QoL upgrades that deepen the experience for both casual and hardcore Milky Way Idle players. With new leaderboards tied to Achievements, Collection, and Bestiary progress, the game now offers more long-term goals than ever.