Under like 1500-ish chess.com rating, playing the Caro-Kann won't really matter too much for getting in the way of tactics, but at the higher levels, the Caro-Kann Defense isn't really a good choice for black wanting a tactical game; actually, the Caro-Kann player tends to be a bit more positional, almost always solid and doesn't shy away from trading down into an endgame when they have a good pawn structure. I should know; I actually play the Caro-Kann with black 
(although I used to play 1. e4 e5 for more years than I've used the Caro-Kann, I've still been playing the Caro-Kann for about a year or two by now).
If you are the white side in a Caro-Kann and want a tactical game, then try one of the variations better suited for this such as the aggressive Panov Attack. As the black side though, if tactics are desired, then there are better opening choices to choose from.
I made a YouTube video a while ago on choosing your opening and a fun quiz in it which can help as well as other resources or tips of advice. I'll send the video link if I can find it (the quiz link mentioned in the video is also in the video description).
(Note that there is a TLDR at the bottom section. I LOVE writing, and this post is VERY long, so unless you like reading the details of the tragic, dramatic, TERRIBLE woes of a beginner who studies openings way too much trying to teach their fellow patzers their studies, then USE THE TLDR.)
Anyways, with further ado:
Hey, Caro enjoyer here. you may recognize me from my "Openings for freind" post. Well, my freind found an opening, and one I recommended to him (albeit out of the 5 openings I gave him to try, I gave him this as the one I recommended the least, and I even considered not recommending it, but its his choice to pick his opening repertoire, not mine, I just recommend the stuff, so I put it in.) Even though they have yet to win in it, and in my opinion, it doesn't really fit them.
My freind plays the Caro Kann.
Now, I have NO problem with this on its own; in fact its my favorite opening, and the whole reason I like playing as black more than as white, and I find it quite cool that all of my chess freinds play similar openings. However, this particular freind in question (I will call him "Aiden" for now, even though that isnt their name, for anonymity reasons) has a style that contradicts their opening choice.
Aiden is a chess player archetype I like to call "The Tactictian". You know those players who will NEVER resign, even when down a whole rook or more, NEVER asks for a draw, unless they know for a fact you also know its a draw and exactly how to make it a draw?
You know those types of players who always are attacking, pressing, prodding every part of your position, setting traps, just waiting for you to take the bait? Even when down a queen, they might make a trap, taking advantage of your unsafe king, where if you take that perfectly hanging knight...
Suddenly, you get back rank mated, and you realize you are the stupidest stupid to ever stupid. (For the record, yes, I lost twice in a similar way, albeit, I wasn't up a queen, being up a rook. Aiden tends to like these back rank mate traps, and when I play him, I have to watch out for my king a bit more than I do with anyone else.)
However, they play the caro, and I am wondering if there are any tactical, aggressive ways to play the caro as black that would fit his trappy playstyle.
I have recommended him the tartakower variation, as I think they would be fine with sacrificing their pawn structure for more space (the doubled pawn on f3 fights for e4, disallowing the normal e4 outpost that white normally gets.) However, I know there are other variations. Please, for anyone that sees this, help me, and recommend some variations the Aiden would like. THANK YOU!
TLDR:
I recommended my freind some openings, and they picked the one I least expected them to pick: The caro kann. This is unexpected, as they are an extremely aggressive and tactical player, always looking for tricks and traps, which normally isn't the most fitting for a caro player.
I am wondering if anybody knows some aggressive variations in the Caro for black that fits my freinds playstyle. I have currently recommended the tartakower variation, but I need some more possible suggestions.