Better Call Saul finally killed off his character in Season 6, Episode 3. Nacho's keen instinct has kept him alive and under the Salamanca's radar.
Yet, after successfully escaping from the Cousins, Nacho turned back and agreed with Gustavo "Gus" Fring's suicide mission in return for Mike Ehrmantraut's promise to keep his father safe.
Giving him a shocking but tragic ending offered viewers the closure they need while leaving some space to ponder upon.