Kristoph Gavin has this combined with total Disproportionate Retribution. After getting Phoenix disbarred, he stalked everyone involved in the case, then he killed a magician, an artist, and he almost killed the artist's daughter. What caused this quest for revenge, you ask? His client, a famous magician (the aforementioned one, no less) whose successful defense would have brought Gavin much fame, wanted a different lawyer (Phoenix) to defend him.
Phoenix himself later repaid the favor. After having his attorney's badge taken away for presenting Gavin's forged evidence, he lost respect for the whole judicial process and manipulated a crime scene, forging some evidence of his own to get Gavin convicted of killing the magician. Then, he managed to overhaul the entire legal system just to ensure Gavin also got convicted of killing the artist.
Shion in Higurashi: When They Cry goes on a delayed one in her arc. She goes a bit far, by which we mean that even after she's killed a little girl who she promised to take care of, she doesn't stop, despite it having become obvious that her family knows nothing about Satoshi's disappearance - although what the rest of the Sonozaki family did to her is pretty damn horrible too.
Juniper's Knot: In the fiend girl's backstory, we learn that she had a friend when she was still free. Because she was close to a demon, the girl was killed by the townspeople. When the demon girl discovered the beaten, raped body of her friend, she killed everyone in the town — men, women, children — and set it all aflame.
The perp in the main case of Hanai's route in Metro PD: Close to You is systematically targeting people close to Hanai - his unit, his friends, his mentor, his brother, and eventually his partner - in revenge for his arrest of her lover for crimes someone else committed.
Tsukihime: Arcueid Brunestud's kill list: #1: Michael Roa Valdamjong, whenever possible and as much as possible until he stays dead, damnit. #2: Dead Apostle Ancestors, so another 20 or so on the list. #3: Normal Dead Apostles, Demon Lords, people like the Church who get in her way.
Kohaku's hero status is rather debatable but her targets go like this: Makihasa (done) Akiha and SHIKI (done in two out of five possible endings, SHIKI in all of them. Then maybe Shiki and anyone else related to the Tohno family she can think of.
Nine Hours, Nine Persons, Nine Doors has three of these. In the Axe Ending, Clover goes Ax-Crazy over her brother's (apparent) death and murders Santa and Seven, who she believed killed Snake, June, for getting in her way, and Junpei, for his bracelet. In the Safe Ending, Snake flies into an Unstoppable Rage after Ace taunts him about Clover's death and pulls a Taking You with Me, preventing him from escaping the incinerator and letting Junpei, Seven, and Lotus escape. And finally, the True Ending reveals that this was one of the two purposes of the Second Nonary Game - to get revenge on the four men who were responsible for creating the first Nonary Game.
Akane goes on one of these if she finds Junpei's head in a freezer. Assuming incorrectly that Carlos killed him, she attacks him with a chainsaw; the resulting fight ends in either Carlos killing Akane in self-defense or Carlos concluding that he killed Junpei and committing suicide.
Akane goes on another one of these if Carlos kills Junpei in an AB game to save himself. She bashes his skull in with a fire extinguisher... sixteen times.
Eric goes on one of these if he finds Mira's corpse. He starts threatening everyone around him with a shotgun to find out who did the deed, and it takes some very careful persuasion on Q's part to calm him down.