Beating my head against a wall. I used the Seed to try to get to the dice door marked 2, but the seed wouldn't let me jump high enough. Not looking for the answer, just a hitn would be great.

I found all the demon dust levels and unlocked the vault but I don't know how to progress any further. I've activated the teleporters on Floor 2,3 and 5 but I don't know what the solution is for Floor 4. I found the QR code looking panel nearby but I'm stumped on how to use it. I've tried scanning it with my real life phone (like a muppet), I've also tried hovering the in game flip phone over it (like a muppet). I also thought the worm enemy with multiple weak points per body was a possible cod...

Is the secret, out-of-bounds door in level -3 supposed to be inaccessible? I'm referring to the black and white one floating above the room with the teleporter in it, not the red dice door. (EDIT: By "inaccessible" I mean nothing happens when I click on it or try to interact it. I can reach it just fine.) I found one in level -1 that worked just fine, but I can't seem to enter the one in level -3 despite trying a bunch of stuff. I just wanted to know if this is working as intended or a bug....

shouldn't be forced to waste the limited time you have on doing the tutorial on every run

I thought it would be in either Level -1 or -2 but cannot find it :/