Nvm, just found it. To get the second ending, go directly to the Engine Computer and type the password. Instead of clicking confirm, head back to the teleporter at the beginning of the game. This time, you can leave and there will be a short cutscene at the end.
Great game! I really like the abstract concept. Add some nice instrumental music (Blade Runner-esque, perhaps?) and you've got yourself a nice game. 5/5
Thanks! I appreciate the feedback, and I like the idea of instrumental, absractish background music.