Congratulations for making it to the end! And sorry for not making the puzzles more challenging, I'll try to do so next time I'm giving away stuff. Right now, I've been caught up in job hunts, freelance projects and university applications, and I'll probably continue to be so for the next few weeks. But after that, stay tuned for more challenging adventures!

BONUS GIVEAWAYS!!!

The Binding of Isaac Collection

Frozen Synapse

And the reasoning for the solutions...

1. "j" for Jötunheimr, homeland of the Giants, ruled by King Thrym and menacing the humans in Midgardr which it bordered.

2. "X", in Braille.

3. "t", for Telemann, the name of the composer pictured.

4. "Y". Coordinates for the commune Y in France (the "my side" referred to "my side of the world", as many were quite aware from the clues I was Eastern European, but wasn't really necessary anyway, as the coordinates immediately pointed to the commune using Google.

5. "W" for Watt, which the formula references. Pretty easy to Google.