SOLUTION:

So, here's the detailed solution to this little puzzle:

• first of all the starting link wasn't getting you to a single giveaway, it was actually 4 distinct links each getting to a bundle giveaway.
• hidden in the description of each bundle giveaway was a link to a fragment of a QR code. The full code could be assembled without flipping, rotating, twisting, turning or bopping the pieces. The reason why many of you couldn't read the resulting code was because the 4 pieces had OVERLAPPING SECTIONS. It was easily spotted in a wrongly assembled code because you would have in the center of the image a repeated pattern. The right code would give you this string: NB2HI4DTHIXS653XO4XGI4TPOBRG66BOMNXW2L3TNAXWINTXM42TOODCNJZGI5LEGVQS6SKLHFHGIMRVGRCUW===
• the string wasn't encoded in BASE64 as many of you thought, but in BASE32. The difference is easy to spot once you know it: all the characters are uppercase and there are 3 equals sign at the end (BASE64 allows a maximum of 2). When converted you'll get this link to a dropbox folder: https://www.dropbox.com/sh/d6wg578bjrdud5a/IK9Nd254EK
• the seven files contained in the folder contained three intruders. The file 4.wav, reported as broken, was actually a text file that contained a link to the Blacklight giveaway and the hints for the next step. It told you that not all of the music files contained actual music, and in fact the files 5 and 6 were actually images converted to sound with a little program called Coagula; they can be viewed with any Spectrogram analyzer. In the file I suggested Sonic Visualiser, but there's one in Audacity too. On one image you had the word PASTEBIN, while the other had Morse code that translated to 3jPE9aZS, giving you http://pastebin.com/3jPE9aZS.
• the pastebin link contains a binary text. When translated you'll get a morse code, that translates in more binary code, that gives a BASE 64 code, that finally contains the links to the three Legacy of Kain giveaways.
• The last step was quite easy: in the three LoK giveaways I put the final giveaways code for Alan Wake. The catch was that the codes were on a comment, not in the description.

I hope you enjoyed this puzzle and I hope to see you all for my next one. See you soon!

Hello fellow SteamGifters!

How are you today? Do you feel a lack of puzzles in your life?
What do you say? NO? Well, I couldn't care less! Here's another one, all special, all MINE!

Rules as usual: no sharing, no leaking, no hinting, SOLVE IT BY YOURSELF!!! (pleeeease)
If you're stuck wait for the hints I'll drop here(maybe), and if you're REALLY stuck you can contact me on Steam, any hint I'll give this way will also be reported on this thread.

If you think there's a problem, contact me ASAP, I'll check it out.

The puzzle runs for a week, good luck!

You can start here!

Please bump the thread when you've solved the whole puzzle!

A NOTE FOR NEW PUZZLE SOLVERS: did you know that you can make an "invisible" link by using this syntax: {}("yourhiddenlink.here")(with square brackets instead of curly brackets) ? This way the link is on the page, but you can only see it by accessing the HTML source of the page! The more you know

ANOTHER NOTE FOR EVERYONE: since many didn't notice, there's a total of 10 giveaways in this puzzle!

HINT 1: yes, there's a QR code. NO, there's nothing wrong with it, you just have to be careful.
HINT 2: Look at what you've done! LOOK AT IT! (the QR, I mean)
HINT 3: The note for new puzzle solvers may be the most important advice for solving the whole puzzle, or maybe not.
HINT 4: what you get may not be what you immediately think, but BASEically they work in a similar way.