thanks but now i have a new question (Patreon Beta v1.62): After activating the tower and calling for help, the Air defence shoots down the plane. how do i get to the crash site from the tower and where do i use the yellow key card?
It's been a while since I played the demo, but from what I remember, you get down from the tower and you get south according to the map. You meet Ucogi, then you go right (west), then north (through the labs at the top right corner on the map). The Beta ends when you get to find Alice.
The map should have red circles that tells you where to go next, but these objectives may change from time to time, according to the story. The new key card that you get from the tower is used on a couple of doors, until you meet Ucogi. It's not about the card color but about what level doors it can open. I think it opens doors lv2.