Here we go with a pretty huge update!
The newest branch is THE MAELSTROM, an everchanging dimension that spawns portals to random locations throughout the Hotel. Frankly, this branch is heavily inspired by DCSS's Abyss. There's several ways to get to the Maelstrom and not all of them are voluntary... The Merchant was added, a new disguise that starts with 4 unidentified potions.
Five monsters have been created including Goblin Anarchists, Prismatic Masses, and three kinds of Toadstools (wandering mushrooms that shoot various types of poison). And there were plenty of small changes. This month, I reviewed dozens of old (and new) Let's Plays with a more critical eye. Polish has been added with the goal of making mechanics easier to learn, easier to understand, and simply more fun.

Changelog:

• The tutorial has been improved with some handholding removed and "blended" right into the game itself.
• A Hints system has been implemented to help explain several crucial mechanics.
• Blue, Yellow, and Red Toadstools added. Green Men turn into "Husks" when dying, which can transform into Toadstools at night.
• Prismatic Masses added. They do all 10 kinds of damage and can only be found in the Maelstrom.
• Goblin Anarchists added
• Merchant disguise and achievement added.
• THE MAELSTROM is the new branch, reachable from the River. It uses a kludgy cellular automata to reorganize itself.
• Monster generation has been corrected. With the introduction of wolves last patch, waaaayy too many monsters were getting spawned. Woops!
• Bats, toads, and baby spiders have all been made a bit less annoying.
• The transition between human/vampire and vice versa has been clarified visually. Previously, it was especially confusing because of unread books.
• A less annoying door sound has been introduced. The old one can still be heard occasionally.
• Fixed a game locking bug that happened when the user clicked on Menu while in another menu. Thanks Mitchfynde!
• Difficulty is now on the character sheet
• Added descriptions to each difficulty mode
• Balaurs have been removed from the Pharmacopoeia
• Fixed Stupefy mouse range indicator
• Pools of blood stick around slightly longer.
• Fixed an issue where music wasn't switched out when teleported, only when taking stairs
• Tooltips show up for identified potion icons on the Potion menu
• Blood potion gives a small HP boost when humans drink it
• Right before turning vampire, regeneration goes up 4x. This should prevent a lot of bad experiences when going vamp
• Vampire disguises get to start at night now.
• The Shapeshifter starts during a full moon and Lycanthropy lasts much longer.
• Reworked disguise menu to use relative rather than absolute stats.
• Animated the key icon on disguise menu to make it clearer when unlocks are available.
• Hawkers weren't actually resistant to sunlight, but that's been fixed.
• Instability effects (resulting from repeated teleport magic) have been softened.
• A nifty teleport animation has been added.
• Moroi have been made much weaker, but now give the Vulnerable status.... which is really scary!
• Examining a sunlight/moonlight tile now says something about the light there.
• Miasma has been buffed a lot, but has a chance to poison now instead of confuse.
• Combustion and particularly Volatile Poison have been made MUCH more useful. Hint hint.
• Added a Confusion icon
• Monsters are now generated away from staircases to discourage a reliance on stairdancing.
• Put in a decent message in case save file loading fails.
• Fixed a common problem where players would fire their revolver in the wrong direction because they moved their mouse when intending to just click.
• Apparently several monsters that shouldn't have been regening health were in fact doing so. That's fixed.
• Lore books are now collected in the Books & Letters menu. The opening letter will no longer be shown by default.
• Drop caps (the super cool huge letters that begin chapters in old books) have been added.
• Some file writes have been made asynchronous, which should prevent some hiccups.
• Stritiba renamed to Cragsbellow to help with pronunciation.
• Death tips font made much bigger.
• Cancel option added when trying to forget a spell.
• Plate and leggings auto-equip wording clearer.
• Beds give a hint about how to rest.
• Input delay added to certain menus to prevent accidental selections.