One of my least favorite missions of the original campaign as well. This, and The Sword. I just don't like them. The architecture of Constantine's mansion, lots of noisy surfaces, hard enemies, which are placed almost unfairly in some places, and the fact that it's not a typical loot mission. Not my cup of tea.
Not that I really dislike any of the mission of the original campaign, but, this is surely the one I least like. 4/10 or 5/10, probably.
This mission is exactly what I want this mission to be. I promise.
This mission may be a guilty pleasure of mine but I respectfully disagree. The level itself is actually pretty complex and I discovered that it's best (and probably meant to be given Garrett's situation and the slightly soured relationship with his principal) played entirely "revenge style", ie using the means you get that are actually very accurately dosed to be just enough (on Expert) to dispose of ALL enemies in the level in any ways imaginable in the Original Ghosting ((C) Civvie) style ...