No, you can not get a second Steam key for your purchase. You will have the buy the product twice if you want two copies of it.
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Its not that i want 2 copies, Its that The developers say You can Connect it to steam aswell, and I have a dlc on my steam account that Some odd reason it says i dont have it when i use the non-steam version of the game? And ive lost access to my steam account and Steam wont give it back.. Whomever got into my account on steam had changed the email..