Noir showed a screenshot of some wall tiles he made, and in an effort to show him up, I made some and gave them to him. I also submitted them to the database, with the promise of updating them.

And here's the update. These are no longer just dungeon walls, but now more of a dungeon set. Now, it cannot be said these are a complete set of tiles, as there are a few more things I know I can add, but those will come later.

These were made with simplicity in mind, but as a habbit, I did make some of these tiles require layers to use. At most, you'll only need two layers (Not including the base layer) to use these properly. Also, these might still be able to be recolored to fit most, if not all tilesets. However they now use 16 colors, instead of a simple greyscale.

Here's a list of what's all included in this set:

Floor Tiles--
Normal
Cracked
Missing bricks
Moss patch
Rubble

Wall Tiles--
Standard
Corners
Diagonal
Barred windows
Candles

Door Types--
Passage
Locked
Shutter
Bombable
Bombed
Boss

Other--
Pots
Fallen bricks
Torches (Lit and unlit)
Pillars
Spider webs
Prison bars (Can be linked with outward-facing wall corners, as well as the pillars)
Prison bar doors (Passage, locked and shutter)

Update: I added a couple things; Boss Doors (Open and closed), as well as some narrow corners for the diagonal walls

Noir for the inspiration.
Some of the people in #PureZC for suggestion on what to add.