This save file is at the point where I am ready to nuke the planet Grus. It does not award the achievement. I have tried doing it repeatidly.

UE nuke Terran - GRUS System - Not working.zip

Thanks for your report! I tried your save but I don't meet the issue and I unlocked the achievement ...

Could you post your Diagnostics file and Output Logs?

• Diagnostic files (located by default under "C:\Users\YOUR_USER_NAME\Documents\Endless Space 2\Temporary Files" -- for Mac users: "User/YOUR_USER_NAME/Library/Application Support/Endless Space 2/Temporary Files") and select the correct file by looking at the name like "Diagnostics - 2016'10'11 @1407'46''" that gives you the date and hour which should correspond to a save file)
• Output logs (one output_log.txt located under Steam\steamapps\common\Endless Space 2 in a folder named in the YYYY-MM-DD_HHMMSS format created in case of crash and one in the EndlessSpace2_Data folder -- for Mac users User/YOUR_USER_NAME/Library/Logs/Unity/Player.log )

Thanks!

I just tried and it still wont work.

Diagnostics - 2017'07'19 @1608'50''.html

I can't find the output log folder I use a PC

SHould I try reinstalling? I have a few achievements that won't hit and some game files that crash my game.

The Output log file can be found at "%Install Folder%\Endless Space 2\EndlessSpace2_Data\output_log.txt"

Also, Try verifying your game cache in steam before trying a reinstall.

How do I verify the game cache?

I'm sorry, I can't figure out where it is, I'm on windows 10. 

In Steam, go to your games list and find endless space 2.

Then right click endless space 2 and select Properties, then select the local files tab of the window that popped up.

There should be a button labed "Verify integrity of game files" Just press it and steam will do the rest for you.

Once it's done it will tell you if it found any incorrect files.

Concerning the output log folder, you can follow the same way that CyRob give you:

CyRob wrote:

In Steam, go to your games list and find endless space 2.

Then right click endless space 2 and select Properties, then select the local files tab of the window that popped up.

There should be a button labeled "Browse local files..." Just press it and a new window brings you directly in the good folder on your PC.

In this window, you will find a folder (or maybe more) named in the YYYY-MM-DD_HHMMSS format created in case of crash.

If you can zip the whole folder, upload it here. If not, upload just the output_log.txt file you will find inside this folder.