This is one hell of a blast from the past. I remember playing Stickman Sam on AddictingGames, Hallpass, etc way back when, inbetween Runescape marathons.
But enough nostalgia. I'm going to go down the same road everyone else did: this really isn't a Stickman Sam game. I understand that you're working on Part 5 and only really made this to induce a pleasant trip down memory lane and get people excited, but couldn't that have been done in a different way?
Regardless, I enjoyed popping open the old internet time capsule, and I look forward to playing Part 5.