I appreciated how the text changed from loop to loop; it felt like I was progressing rather than replaying the same level over and over again.
I liked the crudely drawn player character; it added a lot of charm. Would have been nice if they had a walk animation, though. Even something simple like their feet bobbing up and down would have gone a long way.
The wall next to the first openable gate doesn't seem to have its collision set up properly. I was able to walk through it and move around a bit. I thought this might be some kind of secret, but it doesn't seem like it was.
At first, I was confused as to why the "disguise yourself as a guard" option wasn't available at the start. I believe the reasoning is that you have to try both of the given options, see they don't work, and then come up with a more out-of-the-box solution. If that was intentional (which I hope it was because that's a cool narrative idea for a game about looping), it could be clearer in the writing/presentation,
It's cool that you're setting up a story. Best of luck to you if/when you develop it more in the future.
There are some parts where the black text overlaps a black object in the background and becomes hard to read. Giving the text textboxes with borders would have helped.