Yeah I've seen several peeps struggle with the doors because I didn't setup the colliders correctly. That's high up on the list for necessary changes, and its an easy fix too.
And yes I absolutely agree that there needs to be feedback for when the Player wins (an audio cue, and the Player leaving the room, etc)
There's other QoL things I plan to implement including a Menu so the Player can reset the room or just leave the room back to the hub-area.
Thank you for your feedback! :3