Here's the breakdown of the vision....
1. Rey hears yelling of a child saying No
2. She goes into the room and finds Lukes lightsaber
3. Once she touches, she finds herself in the corridor before Luke and Vader battle on Bespin
4. The energy said by Yoda
5. The corridor starts to crumble and crashes then Rey falls
6. Nooooo yelled by Luke on Bespin
7. The camera zooms to Luke and R2. Theres something burning in the background
8. Binds us said by Yoda
9. Rain pours down and Rey looks up to find someone swinging a stick at her. He gets stabbed from the back by Kylo Ren. The man swinging the stick yells in pain. It seems that the man with the stick (is that the same stick Rey is carrying) is a member of the Knights of Ren and Kylo is stopping him.
10. Rey stands up and is shocked by her surrounding. Corpses lying everywhere and the Knights of Ren standing in the center. Kylo Ren turns to face her and starts approaching her.
11. No, come back! yells a younger version of Rey in Jakku as she looks at the spaceship fly away Quiet girl says Unkar Plutt, the Jakku Junk Dealer Possibly suggesting that she was traded for the ship.
12. Rey looks at the spaceship and the blue sky turns to black and the sun to red.
13. Rey?
14. Now Rey is in a snowy forest and Kylo Ren appears suddenly with his lightsaber drawn, forcing Rey to fall back and out of the acid dream
15. This is the first step possibly by Obi-Wan.