Hi! You can talk with the Mermaid, she complains about the low quality mushrooms. Then you can ask the Goblin for a good one. He is hidden behind the house with the potion sign (on the right side). The mermaid will accept the new high quality mushroom and a couple of sex scenes will follow. After that a particle orb appears next to the broken house in the corner of the village. Click it and soon after that the demo ends. Note that all these scenes are secret bonus scenes, not part of the main quest. In the next build the sequence for finishing the level will be totally different.