[Solution posted] My third [hardest] puzzle

Game: Castle Crashers (x3)
Contributor value: $4.99

It is here. Good luck ;)

You can also try to solve my fourth puzzle.

Solution of my third puzzle:
1/8: In source code of page you can find the word "MONDAY" and the link to .zip archive on Dropbox. When you unpack archive using password "MONDAY", you will see .png file and another archive. .png file contains QR-code with text "QRs everywhere". It is password to inner archive. In it you can find .txt file contains phrase "nobody loves mondays". It is a key.
2/8: In source code of page, in tag 'style' you can find id 'dont_look_here' with 'color: pony;'. 'Pony' is a key.
3/8: In HTML comments (<!-- -->) you can read "Deus Ex". This is a key.
4/8: In HTML comments you can read "Where". This is a key.
5/8: 'Angry' is written on the image.
6/8: 'like' is written on the image.
7/8: On the image is written link to QR code, contains word "enjoy". This is a key.
8/8: This is the map of QR codes (L - to the left, R - to the right, U - upwards, D - downwards). From the top left corner:
R->D->L->D->R->R->R->U->L->U->R->R->R->D->D->L->U->"finally solved"
"finally solved" is a key.

Solution of my second puzzle:

1/8: Select text on the page and you will see word "Unicorn" below the submit button.
2/8: In source code of the page you can see word "Again" in HTML comment (<!-- -->).
3/8: In source code of the page you can see words "I", "love" and "giveaways".
4/8: "friendship" is written on the grey image.
5/8: At the previous stages textfields had a name "answer". On this - "puzzle_giveaway". "Puzzle giveaway" is a key.
6/8: In source code of the page you can see "Tomb Raider".
7/8: "crazy" is written on the image.
8/8: 4 parts of the grey image is hidden on the page. When you assemble image, you can read word "prize".