If you play the steam version of Thief then the default key to quickload is the same one that steam uses to take a screenshot. I never changed either. What follows is the adventures of Gorret, the worst thief the world has ever seen. I might have done some pruning of closeup shots of floors and the bottoms of dark pits, but I assure you there weren't many of them.
Having only played the original release of The Dark Project way back there are two things that stand out to me, firstly that the Gold version is pretty different to the original, and secondly that the common notion of what Thief is, basically a heist simulator, is not what the first game was. It's more like an action-adventure game with sneaking in it, featuring a couple of heists but also tomb raiding and a lot of other antics. I haven't yet finished the game, but here are some of my impressions of the levels I have played through. Do note that I played it all on expert, I don't know how much of an impact that had on my impression of the game.
A Keeper's Training
This training mission is a classic, it doesn't go overboard like some overly nursing nanny but teaches you the basics that you need to know. The perfect balance between kicking you right out of the nest and keeping the training wheels on forever. I wish all tutorials were like this, breezy, getting down the essentials and tying it into the story. Even though I already know how to play the game I still liked going through it.
Lord Bafford's Manor
This is a level I have played a bunch of times, it's memorable, has a good progression from linear to the more open style you find in the rest of the game. I think this is what many remember Thief being like, the core of the game, but it really isn't representative of the rest of the game at all, it's just one aspect of it.
Break from Cragscleft Prison
Breaking into a prison inside of a mine system, it's a cool idea, but those zombies always spooked me too hard at first and it took me several attempts to get over it. Once you have gotten used to the terribly creepy audio design then this mission is great, big and open, the cave system is labyrinthine and you can go in circles for a while until you get your grips on the place. Great level, making my way out with Basso over the shoulder after escaping the guards and going down a waterfall felt more cinematic than any cutscene could ever have.
Down in the Bonehoard
This is where the fun begins, we had two heist missions so far, one having a couple of zombies in it probably to make the shift to this mission smoother, because now we go tomb raiding. It's like Indiana Jones but way spookier. This is the kind of thing that got lost in the sequel and in later entries and that came as a bit of a surprise to me upon this replay of the game. This is also when it hit me just how big these levels are, because this is absolutely enormous and with no loading screens beside the one at the start. It's crazy.
Assassins
Yet again we switch gears, this time you stalk assassins through the city streets, which are really easy to get lost in. It ends with a smaller heist mission, which I enjoyed, but the alarm went off without me hearing it and that was kind of annoying, which meant the way back was full of guards. It's a nice detail, that you can't just get out into the street if you have triggered the alarm, but I wish it was more noticeable. Overall it's a decent mission that does a great job of keeping you on your toes.
Thieves' Guild
Huge mission, but I didn't like it very much. Too many samey sewers and you have to backtrack a lot, it doesn't offer a change of pace or something really unique, it's just the designated sewer level. This level also wasn't in the game before the Gold version, so it was the first time for me playing it. It's not
terrible or anything, but it's just kind of there, it just adds length to the game, not quality.
The Sword
This level blew my mind multiple times and it's even crazier in the Gold version than it was initially. You think you're getting into yet another heist when you have gotten tired of them already but it completely blows you away once you're inside the mansion. Easily the best level in the game. If there was a peak in the series then this mission must have been it.
The Haunted Cathedral
Second best level in the game so far. Super creepy ambience in this abandoned part of the city and the streets are full of the walking dead, spiders and other beasts. It's a crumbling and decaying place full of terrors and you have so much freedom in where to go, it's all so interconnected, yet it isn't as annoying as caverns and sewers since you have landmarks and stuff. 10/10 mission and it isn't a heist level.
The Mage Towers
This one is new to the Gold version, it was alright but I feel like how everything was divided up was kind of like filler. Four towers, four courtyards with samey content. The central building and tower were neat, but the four elemental towers were just sloppy and formulaic. I wish the mission threw you a curveball at some point.
The Lost City
I used to like this almost as much as The Haunted Cathedral, but the Gold version has ruined it by putting the lame mages from the previous mission in this one. It's so dumb, because the entire appeal here is venturing into the long lost ancient ruins where almost nobody has ever been. The original level was so eerie and haunting but now it's like the lameness of The Mage Towers has also seeped into this one.
Song of the Caverns
With this mission the Gold version is trying to redeem itself, you're thinking you're going into another ancient cavern with ruins and stuff but the game completely changes direction early on, catching you completely off-guard and throwing you an opera house heist. Top notch mission, very open, tons of hidden pathways and stuff, it's huge and the setting is great. Loved the little storylines going on in it too.
Undercover
As with many of the levels of the original game this is concerned with keeping things fresh and to that end it works. The level itself isn't great, you basically just have to go around without sneaking and bonking hammerites on the head when they are alone because there is an alarm going off when you take the elemental zeal thingy and I don't think you can turn it off. So it's like some kind of bizarre variant of your regular Thief mission where you don't have to sneak. Dishonored did this better with Lady Boyle's Last Party. But again, it's a welcome change of pace when you look at the game as a whole, something new to do.
Return to the Cathedral
This mission is way too scary initially, but when I learned you can just bonk most of the haunts with the sword to instakill them then it became bearable. Even now the game isn't content with just giving you the same old, so you're going on an adventure to help out a ghost. It's super fun and while the level is large this isn't one you get lost in, so despite going on hunts of items and stuff it never becomes frustrating or dull.
Escape!
I'm still in the middle of this one, but it's both bad and good. I like how weird it is and stuff, but I simply have come to dislike labyrinth caverns that have nothing even close to a map. The mission is also novel in that you're trying to find your way
out of a place rather than into it.