Space Engineers DLC unlocker
You have to replace the game files with those in the archive. If you mess with something, a backup is included so you don't have to recheck your files from Steam.
Extract the "Content" folder in your game directory.
Example: C:\Program Files (x86)\Steam\steamapps\common\SpaceEngineers\
To download the archive, click on the green "Code" button and then on "Download zip".
Or download it from MEGA.nz
If some minor bug patches prevents proper operation of the game, let me know in the discussion tab.
Otherwise, I will update the unlocker with the next major release (I'm currently not playing due to summer job).
Special thanks to user 0x000015, that made ColorfulRainbow, but it's no longer updated.