This was a decent level with some minor issues.

There is a typo in the main mission description, some textures don't align well, a spotlight is pointing in the wrong direction, and I got stuck a few times as the "secrets" weren't sized well (I use quotes because there are no secrets). All of the "secrets" are intended as part of normal play.

There was a 4th-wall-breaking note that I guess was intended as an easter egg, which I don't care for in missions, and it was placed next to an unfinished part of the level. I guess it could have been a joke based on the note, but I don't believe you should ever be allowed to see the void standing on a normal path of the level.

The mission's end room was not an out-of-the-way location, so if you met all of the objectives and ran past this point while wanting to look for more loot, your mission would end when you weren't ready for it to.

The carrots in the kitchen were cloned but not moved, so each carrot on one shelf was duplicated on top of itself.

It's also very odd to play an entire Thief fan mission without lockpicks. (It's one thing to not start out with them, but to never find them or need them made this feel a little less like Thief.)

The story was a very small part of the design as well.

While most of those are minor complaints, they do add up. Still, it was an enjoyable 20 minutes with an extra few looking for well-hidden loot. If you just want some extra in-game Thiefy time, this will do.