Frank, thanks for the great feedback! I'll let Ruru know you loved the graphics.
The final survivor is supposed to wait for you to draw the alien away from this location before he is willing to come down. Finding him, and then using the rocks to trick the alien into going away, we thought would make for an interesting puzzle. Did you have to make the alien move away before he was willing to come down? It's possible the LLM ignored that condition and just came down when you asked him, ignoring the presence of the alien.