Hey, I'm really loving this game and im having a blast with it, but I have gotten stuck. I've gotten all of the keys, have opened the puzzle box, gotten into the lower part of the skull buliding, and repaired the first energy device. If someone can make a walkthough or point me to someone how has that would be great!...

some1 know where is the 4th sign? The one looks like ":|" im missing it ;/

I understand that I need to push all of the panels in this room (I've already done the pattern that reveals a letter), and once I have that pattern, it should trigger the sequence for the very last bit of the game. I thought that I was just doing something wrong, but I broke down and checked a walkthrough...and one of the blocks that should be extended to get the correct pattern simply won't move (which is the behavior of the blocks that are supposed to stay recessed). Since it won't move, I can't create...

Anyone else with the same problem? I just finished the whole game and no achievements triggered.

Please write down your gameplay duration here in comments.