EDIT : With the patch 12/05/2016, this achievement is not gliched anymore. If you've already completed the requierements, it will unlock on main menu ;)
From the main menu, navigate in all the folders and launch whatever you can launch. Also, NOTE that you need to complete the game to unlock this achievement, since finishing the game unlocks credits.exe on the main menu, that is required for this achievement.
OUTDATED INFORMATION :
Unfortunatly, for the moment, this achievement is glitched so i've emailed the devs and here is the answer :
thanks for letting us know. We are aware of this bug and will do our best to fix it! Thanks for your understanding!
If you want to report the problem by yourself, here is their email adress :
I've sent an other email yesterday following the news about the DLC, here is the mail and their answer :
I have one question to ask you.
The community reported that you said on twitter : A DLC is coming this year. (Great news BTW :p )
Our question is : are you going to release a patch for the glitched achievement before the release of the DLC or the two in the same time ?
Thanks for reading me and have a nice day
We don't know yet, it's hard to say. Keep an eye on our Twitter and Facebook feeds. :)