Thank you! Yes i expected the gameplay might be a little annoying but I didn't really had time to work refining it. And regarding the bug. After the gate opens, you can advance a little, and then the game ends. Does the gate not open at all? I didn't encounter this bug. Did you exhaust all of the green zombie's dialogue?
I think I did something that broke his interaction too. I should have screenshot it to show you. I might have jumped immediately after trying to interact the first time. I didnt get any of his lines and didnt know about his collection quest, other than from reading someone else's comment. The textbox was there but no interaction.