The last three classes I played were all “stealth” classes. Assassin, Thief and Doctor. Let’s see the differences, what the game does to make different the same concept of stealth.
The Assassin is a very aggressive stealthter. Which is ironic because he potentially has the most OP stealth tool, the Camouflage ability, 10 seconds of invisibility, 5 seconds of CD between uses, and the unique feature of not breaking invisibility when opening doors, backstabbing someone, or picking or using objects (unlike the stealth cardboard box item). This allows you to try to complete some goals that are inside buildings while invisible. But he also has the ability to deal 10x the damage when backstabbing, that combined with the ‘maintain invisibility even when you backstab someone’ means you can cap fools in ninja mode, retire to recharge the ability, and do it again.
It sounds OP, but of course people goes to investigate and search around if see a body drop to the ground suddenly, and the invisibility breaks when someone ‘touches’ you.
To balance the possibly OPness, his stats are mediocre, which doesn’t make sense for a professional assassin but whatever. As good as he is in ambushes, he is weak in normal melee, be aware of that.
He has an interesting Big Quest, in each floor there is an extra mission, a target to assassinate. The target usually roams around and has bodyguards, and you have the condition of doing it silently, or killing the witnesses too.
The Doctor is the opposite, a pacifist. In fact her Big Quest is about that, about not having the freedom of killing people, you can only make a pair of ‘exceptions’ per floor. Even worse, let’s say you want to ignore her Big Quest, it doesn’t matter, you can’t use normal weapons with her! She has to use her fists, or some non-lethal weapons like the tranq gun or the taser.
In exchange, she can use a knockout ability, a chloroform hankie with low CD that instantly and silently puts people to sleep (although it can only be used from behind). So you have a great stealth tool to remove guards and other potential witnesses, making some areas trivial, but she is ‘hard-countered’ by some other situations (ie. multiple guards in a room with back to the wall). It’s here where she will have to improvise.
One of those improvisations I found is to use hired muscle to do the dirty work. You can’t kill, but your followers are free… not only that, there is some synergy in using followers, as you can heal them once per floor.
The Thief still plays differently to the other two. What I like of him is that he truly plays like a thief: you can steal money and items to every npc in the game, and he has a series of cool ‘thievery’ tools as this disposition, these ones:
to break into buildings and steal shit. However, notice that unlike the assassin ambush or the doctor’s chloroform, none of his special abilities will help him if a guard discovers him, combat is potentially dangerous for him (although at least, one of his unique traits makes him harder to hit with bullets).
The previous list of items is very nice but what do you when you deplete them? Easy, he has exclusive access to a shopper who will sell more items like those, as he just can buy them from other thieves.
This is all very cool, but finally he also has an important negative trait, he has a suspicious aura (or maybe it’s the classical stripped clothing!) and building owners will kick him out of their premises. That means less access to shoppers, more difficulties to do some missions, and less access to npcs to steal from.