The Giant new cipher?

I don't normally go on this subreddit, but this has caught my attention a couple days back. Not sure if this has already been solved/discovered. These are located in the Pack-A-Punch door.

First image: I can only make out rtuuz. Have not solved it yet.

Second image: This one is definitely hard to make out as the only way possible is to move around slowly to remove the light blocking the letters. This is the best I can show as any other position makes it nearly impossible to see.

Again, not sure if these have been discovered. If not, go ahead and solve them. I have only kept up with news on how many ciphers have been solved and I am uncertain if this one has already been discovered.