Apologies if this information is posted in some other guide here, but I didn't find out about it until someone mentioned it on Reddit 6 months into playing when the golden epic was the only real bonus. I wanted to post this so hopefully someone new to the game catches it when it still has more value to them.

Alienware is running a promotion for the Celeste starter pack which grants a golden epic, set of rares, and 10 gold chests. All you have to do is go to alienwarearenadotcom and make an account to receive it. As of 9/25/20 there are 6210 keys left and there doesn't seem to be an expiry.

Hope this helps some new players.