Oh I couldn't do all the memories then! At some point the game brought me back to the very first level (with the grey tear at the top of the screen). Then I started dying after walking a few steps, and respawning right at the tear. (I could walk off-screen but the camera would not follow the character).
Actually that is the End, you reach there when there are no more memories for you to see which can be either because you saw them normally or they got forgotten. if you do stay in the End scene for a bit the final dialogue should trigger.
Or the game broke down right at the End. Not sure.
But either way you more or less finished the Game. You are probably the first person to do that, so thank you again.