#anyways wilson...character of all time...

[What If? (1989) #2]

An alternative to the Born Again arc where Matt, at the end of his rope after being put there by Fisk, kills him in an act of desperation.

[What If Karen Page Had Lived? (2004)]

What If where Karen lives (in hospital) and Matt's feelings become more vengeful than depressed. Mysterio kills himself when confronted, and Bullseye is apparently too sociopathic to punish? So Matt goes after Fisk for his smaller role in the event. (It's a good comic, even if the reasoning to get there feels convoluted and forced. Like I don't think he'd skip Bullseye.)

[What If? Daredevil Vs. Elektra (2009)]

Matt is killed in college but revived by The Hand with no memories of his former life. He becomes a killer, with Fisk being one of his targets.

[Daredevil: End of Days (2012) #1]

Fisk returning to the city after exile and striking a deal with the feds is apparently the last straw for this Matt. (DD S3, eat your heart out.)

[Spider-Gwen (2015) #28]

"Murderdock" worked for Fisk but killed his boss in order to take his place as Kingpin.

Technicality?

(This gets... half a point. Maybe.)

[Daredevil (1964) #380]

[Daredevil (1964) #380]

Incorrect rumors told by separate witnesses over what happened when a ship that Fisk, Matt, and others were on exploded. At least two of the three iterations appear to have Matt killing Fisk. I wouldn't say it counts because this isn't what actually happened, but storytelling is storytelling.

Fisk Kills Matt

[Powerless (2004) #6]

After other attempts fail to silence blind attorney Matt Murdock (not enhanced or Daredevil), Fisk kills him following one final confrontation.

[Daredevil 2099 (2004)]

Fisk's grandson, Samuel, recounts how Kingpin killed Daredevil, ending their rivalry. (Samuel is the new Daredevil. But also Kingpin as well.)

[Darkdevil (2000) #2]

Fisk gave the order to kill Daredevil and Daredevil was killed. I would say this counts. But what ultimately takes Matt down is getting in the way of bullets meant for someone else. The text box calls it a sacrifice. So yes? No? Is the act of sacrifice what killed him, or was he simply murdered? Would Matt have lived if he weren't protecting someone else? I suppose yes, we'll call it murder.

Technicalities

[Devil's Reign (2021) #5]

Fisk does and does not kill Matt here. He kills Matt's real/not-real twin brother Mike (who was pretending to be Matt) due to anger over his original memories of Daredevil's identity being erased from his mind. Unclear whether it counts. In its favor, not only is Fisk fully convinced he's killing Matt Murdock, but Mike is a creation based off Matt's original portrayal of him. He is and isn't part of Matt. Mike was a real boy with his own life at this point though.

[Marvel Knights: Millennium Visions (2001)]

It meets the basic criteria of being a universe where Fisk kills Matt, but this is all we have. Does one page of text really count? A lot of this comic (mostly text) is filled with jokes about other Marvel characters that aren't meant to be taken serious (like the other DD mention). While I like the concept they imagine here, I think it needs more effort than, "Be cool if..."

[Marvel Versus DC: Assassins (1996)]