From Daddy Hyperion on Patreon:
After your first trip to Wonderland, when you get to the gates, say no, you didn't find love in Paradise. Skip forward, and when Wolfstar is having his hallucinations about their encounter with Dagio, after selecting "Shoot him" a second time, and it prompts you to press a button on the keyboard, do not do it, and just wait for a minute. That way, you unlock the Wonderland route. Continue playing, then, when you're at the calendar screen, pick "Call", call Hugo, then select "Call" again and choose "Voice Mail" and "Yes". You started Cornelius' Wonderland route. Select "Return" after you went through the mirror, and when Cornelius offers you some fun time, pick either of the first two options. Then pick "Go Buck Wild!". Afterwards, both "Escape to Wonderland" and "Reveal yourself" will breach into different routes.