DOUBLE CLICK THE FLAG The instructions are that when the game starts you'll see the main screen then tap z then arrow keys are controls. When Phase 1 begins Papyrus goes easy using attacks that look goofy to sans's attacks because, Papyrus doesn't want to hurt you and wants to convince you that you are still a good person. On phase 2 your soul will turn blue, tap the up arrow to jump. Papyrus is mad because, you are still willing to keep fighting when all he wants is for you to be a good person. Phase 3 Papyrus goes in a full on rage mode on you while the battle goes to the top and he wants you dead now.
This is almost finished. The game isn't that hard but it is a bit. The game over will say you are a noob but that is not a personal offense that is part of the game. Once phase 3 kicks in the project is over..... For now. Also if you need help for a health bar or anything else undertale related feel free to remix this project.