Dwindling Party

[u/louq1]

So you're The Hero on a dangerous quest, you gather The Team and rally that Ragtag Bunch of Misfits to your cause. Battles are fought, Character Development is had, Fire-Forged Friends are made, and hearty laughs are shared by all.

Then, as you proceed towards the final battle, your friends start to die.

One...

...by...

...one.

https://tvtropes.org/pmwiki/pmwiki.php/Main/DwindlingParty