wow...took a while..but i finished the demo...
hints for room 2...once you find the letters on the bricks(don't worry about the SIX on the tent thing) rearrange them to form a word...no it is not the password...if you tried that you have already forgotten about the hs system...place it in there....you get a clue with numbers...again change them to form a 7 letter word....room 3 help the 2.7 bla bla means E in algebra terms...see the QWERTY above the locker? you trace the shape of the letters on your keyboard(if you use a qwerty board) the first letter is still E, the next letter of the password is used with rfbhy, traced on keyboard to make the letter V...so EV....continue until you spell the word