I've released the next version of the game with the in-game level editor. The initial player sight is also increased by 15%.
Also, I have manually typed in your level based on your text level image. I think the best way to find out if something works, is just to try it out and see what happens ^^
I do see a lot of problems in this level, but that's because of the way the levels work now. With these 2x2 tiles, as a level designer you just don't have enough room to properly place the decorations in nice places. The duplication I'm using doesn't quite look right. And the guards get stuck because of the object duplication.
So thanks your level, I've made up my mind. I will change the level editor to use a normal 1:1 tile scale. So every tile will be exactly 1 tile in-game, and you'll have full control over everything inside the level. This will allow you to create nice filled room decorations.
Please wait with your level. I'll need a week to improve the level editor, along with a few more bug fixes. I will convert the previous levels as well.