Hey, sorry, but I don't think downloading the game is possible. Or at least, I can't figure it out. It only shows WALKTHRU.md and SECRETS_ACHIEVEMENTS.md under "Download."
I haven't played the tutorial actually, but I believe I know what the game wants. Pressing space or clicking the robot button on the right will let you select a robot. At the bottom of the panel on the left will be a red dot. Clicking that will start the recording.