well you have to kill all the characters except subtraction/addition and then theres a guide in the community telling you the answers for the last part where equality asks you questions
When Bertrand says "ugh, my equations are shedding again", choose [that's disgusting.] > [get them off me] > [I knew there'd be one.] > [sounds pretentious.] > (either choice) > [your issue.] > [*swat one of the butterflies away*] which kills him :(
