Perimeter 2: New Earth (CD Key Problem)

Hoping someone here can help, as the Steam Forums haven't figured out what's going on, and the developer's site is in Russian or something. Plus the direct link to that site's Perimeter 2 page shows an error. Blah blah, long story short, I've seen the game on SG a few times recently, and I'm hoping someone can help.

Upon install and play, it required a CD key. Problem is I wasn't given one. The only other game in my library I remember having a CDkey was Lead and Gold, and to access that I could just go to properties --> DLC. However, Perimeter doesn't have a DLC tab in the properties menu. Anyone have this issue? On the Steam forums there was someone who said his Warhammer key suddenly appeared months later. I'd really rather not wait months for that. O_o

Thanks for reading!

EDIT: Neglected to mention that I tried right clicking the game and checking for a view CD key option there, as well. Apologies!