I survived the 'DIE' ending, go me. ^_^
Interesting game, but as other people have said, it's no fun to lose all your windows to an intentionally laggy ending.
4/5
And to change profile picture like shmk asked: Go to your profile and select 'edit profile'. Scroll down till you see the avatar image select. Download an icon you like off the Internet, then use the 'choose file' button to select it. Ta-da!
For the briefcase: There are two latches on the sides. Click on them to unlock the briefcase (don't bother with the padlock, it's just there to distract you).
Also, great game. 5/5