Black Cat with no enhancements
Black Cat scales a wall one-handed whilst carrying her father (Also aim-dodging in the scan)
Easily restrains, moves, and ties up a nurse in a mental hospital
Black Cat bounces around a room and off walls evading Spider-Man
Black Cat jumps clean over Spider-Man's head from a standing position
She has great balance, being able to walk along and balance on a tightrope easily
Bounds across a room, grapples and snatches a statue
Black Cat has managed to tag Spider-Man on multiple occasions
Black Cat evades Hydroman and outmaneuvers him, leading to his defeat (this battle takes place after "Powerless" which is the story where Black Cat lost her powers, but before Invasion of the Spider-Slayers, when she got Tinkerer gear)
Black Cat manages to dodge an attack from Doc Ock (the majority of the time he tags her though)
Steals an important device from classic kingpin right from under his nose
Manages to tag Hobgoblin (Kingsley) while he's distracted, but she's too weak to hurt him (Kingsley is a multi-tonner)
Manages to avoid Hyde's blow after sucker punching him
In the next scans Spider-Man is out for the count (largely due to protecting Black Cat), but Hyde and Cobra have a grudge going on and begin to fight. Hyde picks up a huge rock to crush Cobra, but Black Cat takes her chance and runs in and kicks his leg out from under him, leading to the whole weight coming down on both him and Cobra.
Both Hyde and Cobra are weak from fighting each other here, but I thought it was still a cool enough scan to post.
Evades Mr Fantastic
Doctor Octopus grabs Black Cat and slams her into a wall repeatedly in an effort to kill her
After this happens Black Cat is back up and moving around almost immediately
Doctor Octopus restrains her with his broken arms whilst his henchman open fire on her, shooting her at least seven times
This puts her in hospital and out of action for a couple of months.
Black Cat went through extensive training in martial arts and Gymnastics prior to becoming a thief
Black Cat has Black Belts in both Judo and Karate
Black Cat has always had her trusty "Cat's Claw" which is a combination whip and grapple line, she uses it to lasso people and objects, and to swing around the city in much the same way Spider-Man does.
Originally Black Cat's Bad Luck powers were really just an elaborate form of preparation, she would rig an area with traps and wire's etc so that she could set them off later if needed, this is how she would originally escape Spider-Man in all of her earlier appearances.
Bad Luck Powers
Black Cat felt inadequate after what happened with Doc Ock and Hyde and so decided to try to gain some super powers so she could fight by Spider-Man's side more evenly,
she looked everywhere for ways to gain powers and eventually was led by some suspicious looking people into a lab where she gained bad luck powers and had some of her stats slightly increased. The Doctors stated that she actually already had a "latent power in her genes", a Cat-like nature which they were able to enhance.
The lab turned out to be owned by Kingpin.
Originally the bad luck powers stopped anyone from being able to injure her 100%, no matter how implausible.
Floors would cave in, attacks towards her would be wildly off-target, machinery would malfunction etc
Goons miss, hit each other by accident, trip over etc
Bad Luck powers vs Puma, a Meta-Human, she doesn't have to do anything, he beats himself up
Bad Luck powers vs The Blob, he can't hurt her, every time he tries he ends up hurting himself.
Dr Strange enhanced
Black Cat's powers ended up putting a curse of Spider-Man due to how much time he spent around her, he went to Doctor Strange for help. Doctor Strange removed the curse, but in doing so also unknowingly took away Black Cat's bad luck powers in the process.
Fortunately this process actually caused a change in Black Cat abilities, mutating her Cat-styled powers so that whilst she lost the bad luck ability she gained strength, speed, and agility enhancements instead.
This mutation allowed her to turn her actual fingers into claws during this period
Black Cat vs Sabretooth
In this battle Black Cat is fighting a pre-healing factor Sabretooth
and this fight has been referenced since, in 2007 for instance
Black Cat Vs The Scorpion
In this fight Spider-Man has lost all his powers and is a normal human being, Scorpion attacks him but luckily Black Cat turns up and tries to protect him. In this battle Pete helps by distracting Scorpion at some key moments, but Black Cat has to evade Scorpion's attacks, tag him, and keep track of Pete too, as he can't defend himself at all so she needs to be able to leap in and knock Pete out of the way at a moments notice, she's also evading Scorpion's blasts whilst carrying Pete at some stages.
Black Cat + Powerless Spidey Vs Tarantula
Black Cat Vs Scorpion, Tarantula, and multiple weak-ish Meta-humans
In this fight Spider-Man is trying to regain his powers and he needs Black Cat to hold the bad guys at bay, she gets beaten up pretty badly, but does manage to take out half of them, including Tarantula
Black Cat Vs Venom
Yup, she gets her ass handed to her, but Venom is one of Spider-man's more powerful rogues, and at least she managed to tag him.
Tinkerer Gear Black Cat
We're getting into current Black Cat now
At the end of the "Powerless" arc the machine which robbed Spider-Man of his powers exploded, and removed all of Black Cats enhancements.
Black Cat went without powers for a while but ended up buying a costume from the Tinkerer that boosts her strength & agility.
Contact lenses which improve her eyesight
and give her Night-vision
Her improved senses allow her to see camouflaged opponents
Her Tinkerer claws can cut through armour and metal easily
They can rip a Spider-Slayer to pieces easily
She also seen using throwing Knives in this period
Black Cat Vs The Vulture
Bloodlusted Black Cat Vs The Lizard
In this story there is a stone which makes everyone crazy violent. Here we see Black Cat holding her own very well against the Lizard whilst Spidey deals with the mini-Lizard, Connor's Son.
Sucker punch's Carnage in mid-air
Tags Spider-Man again
Black Cat Powers V2
Right, I believe we're pretty much current now, on top of the Tinkerer gear she bought, Black Cat's bad luck powers themselves actually returned a few years back
These abilities are now controllable to an extent, but are currently not a powerful as they were previously
Kingpin for instance was able to grab her during "Big Time" which would've been completely impossible with her original Bad Luck powers when they were working at peak -
Black Cat Vs Rococo
Rococo is a Meta-Human, a product of Super-Soldier experimentation, she's been shown to be strong enough to easily pull a man's arm off, and durable enough to completely tank gunfire and a flame-thrower, under her skin her body is like metal.
These scans reinforce that the Bad Luck Powers are now weaker than before, they also show some good durability from Black Cat, and an electric shock enhancement to her Cat's Claw.
Seconds pass (This is the end of one issue, start of another)
A minute odd passes
The powers may now require her to focus, or may only kick in when she's in extreme danger.
The luck they generate seems to be more plausible now, as opposed to before where things often got ludicrous.
Black Cat seems to still have a lot of faith in her Bad Luck abilities in dangerous situations, so I'd imagine they must still be pretty reliable under certain circumstances