plymoth45 and I were doing this a while back. I get fairly far on it, so let's see how much I remember...
6th lvl: there is hidden text via ascii code
108 105 108 107
117 111 114 104
lilk
uorh
which becomes user: kill pass: hour
7: picture of a candy wrapper: twix twix used to be called raider, and you must spell it backwards! twix.htm becomes rediar.htm
8: okay, remembered how to do it, nvmnd
name: inverted pass: levelten
9: lmao! oh this one was easy the first time:
turnmeon
deadman
10: copy the sound file to your computer, and you will need audio manipulation software (go to the file forum and download goldwave)
I want you guys to work for this one. PM me if you think you know the answer and I'll tell you
11: hints only from now on; look for the truth: look at the title of the pic. Is it just me, or is something wrong with it?
12: look for what's wrong with the 2 pics (if you have a hard time, change the filetype to gif in the url of the pic) click the left 12 when you got it
13: pm me for help on this one, it can be kinda tough 'cause one part lookes like something it's not