In Shadow Fight 2, some enemies fought at the conclusion of a major chapter in the story, yet are not bosses, are called Mini-Bosses. There are five mini-bosses in the game: Cypher, Cronos, Ancient, Shroud And May. Each mini-boss is encountered in a different mode of play in Act VII. Defeating mini-bosses will unlock their achievements.

Miniboss Status
Character cypher

Cypher - Mini-boss of the Hideout Tournament

Character hyperion

Cronos - Mini-boss of the Factory Survival

Character ancient
Ancient - Mini-boss of the Stone Grove Challenge
Character shroud
Shroud - Mini-boss of The Hideout Duel
Character justice 2
May - Mini-boss of the Titan Boss Battle