Key of Left 4 Dead 2 with Puzzle

I'm waiting for answers XD Anyway the 1 answer is "flake" and 4 - ramones

I need help with Question 9 and 5 D:

Ahh I bet I could finish this if it was in english. I like the theme though !

Used google translator and not really sure your puzzle works well... 6,7 and 8 are easy ones yet they don't work lol

5 - which shows greater prominence in the rammstein is the use of:

4 which band has a song called Rock 'n' Roll High School

1 nickname keyboardist of the band Rammstein

2 German band playing a song called To The Hilt

I hate this wait time in between guesses ._.

more one "n" in the final of 6 question

search on Brazilian manifestations and anonymous

I can't figure out the answers to:
3 (Iron Maiden, Black Sabbath, Spinal Tap, Motorhead/Motörhead and Dethklok are all wrong),
5 (They use pyrotechnic effects however "Pyro", "Piro", "Fire" and "Fogo" are wrong),
7 (Okay, anonymous is trying to block the world cup, "No", "Nao"/"Não", "Yes", "Sim" are wrong as well),
9 Admitted, I can't find anything about this..

Question 9 is probably wrong too...

http://www.steamgifts.com/giveaway/SPgAJ/left-4-dead-2

I have 5/10 answers. I can not understand some questions

UPDATE:
7/10

i only left 3, 7 and 9!

Check the question 9, i guess it's wrong, and little hint for the question 3?

Come on poeples we too close !