This guide is for macOS. If you want to know how to get the achievement for Windows, please refer to WEGFan's guide.

1. The first thing you have to do is to enter Steam, enter Library and right click on PARTICLE MACE and then click "Properties" in the menu that appears.
   
2. Next you have to click on "LOCAL FILES" in the window that pops up.
   
   
3. After that you have to click on "Browse Local Files..." to open the Finder window.
   

1. In the window that opens, right-click "PARTICLEMACE.app" and select "Show Package Contents"
   
   
2. Open the folder "MacOS" and right click "playerData.xml"
   
   
3. In the menu that appears, hover over "Open With ➤" and click "TextEdit.app"
   
   
4. Scroll down through till you see the text
   
   <CHANGE_THIS_VALUE_IF_YOU_WANT_A_STEAM_ACHIEVEMENT> <TOP_SECRET>136</TOP_SECRET> </CHANGE_THIS_VALUE_IF_YOU_WANT_A_STEAM_ACHIEVEMENT>
5. Edit the number inside
   <TOP_SECRET>136</TOP_SECRET>
   to another number that is preferably within 0 and 32000, for example 5.
   
6. Save the file by pressing Command+S (⌘S)
   
7. Relaunch Particle Mace
   
8. You should have gotten the achievement!

This is my first guide, so if this helped you, please give a like to show your support, thanks!

If you want to see more guides about PARTICLE MACE's files I can make more, like cheat guides and stuff like that so if you'de like that please say so down in the comments.

Please give constructive criticism, and I'll do my best to respond!