Why Am I Here

What To Do
This is quite simple. First, start a game on Beaver Creek (Level). Walk up to where the Sniper Rifle spawns. Then, head for the end of the path. This is quite hard to explain so forgive me. Once you made it to the end of the path, jump past the dead end. (You can actually do this) I know I have a bad explanation but on what I think is the right side, there should be a place that you can jump onto. Then, there are some rocks. Push all of them down. Where the big one used to be, there should be "Why Am I Here" and some initials. If you don't see it, move back a bit. You'll probably need to zoom in to see it. The initials aren't initials at all. It says not Sid. P.S. There's another message.