This update eliminates 'huge parts of our least favorite levels," Pocketwatch Games says in its announcement post. On top of tweaking the campaign, The Architect's Patch also adds a new campaign section, automatically unlocked for all players, full of three PVP missions and some new mechanics for the base campaigns – like doors that require certain keys to proceed and roaming NPCs who carry cash and items.
A lot of the cuts come from Andy Nguyen, the level designer on Monaco. After the game shipped, he had a long list of gripes with each level – as did players – and so this update was borne. It's an update fueled by stats: Pocketwatch noticed less than ten percent of players who finished the first level actually made it through and completed the last level of the first campaign. The developer is hoping that'll change with The Architect's Patch, which is available now on Steam.