Mortal Kombat 1: Walkthrough & Boss Guide

This page is an outline of Mortal Kombat 1's story mode: 15 chapters in four acts, each following one character. Chapter titles and playable characters follow the Shacknews, Gfinity and Mortal Kombat Wiki lists (as summarised by search results), and plot facts follow Wikipedia. It does not give per-fight strategy, Kameo pairings or opponent lists, which could not be verified.

1. The New Era (Kung Lao), 2. Mr. A-List (Johnny Cage), 3. Chosen One (Raiden). The story follows the new timeline created by Fire God Liu Kang. Per Wikipedia, Liu Kang recruits Kung Lao, Raiden, Johnny Cage and Kenshi for the latest tournament, which Raiden wins.

4. Secrets and Lies (Kenshi), 5. Weird Science (Baraka), 6. Upward Climb (Ashrah), 7. Narrow Escape (Reptile). Per Wikipedia, Liu Kang sends Kenshi, Kung Lao and Johnny to investigate Shang Tsung in Outworld. They free Baraka from Shang Tsung's bone-marrow extraction and stop him from infecting Mileena, who attacks them and blinds Kenshi. The group escapes the Flesh Pits with Reptile's help and meets Ashrah, who reveals that Quan Chi is building soul-stealing devices.

8. Band of Brothers (Sub-Zero), 9. Civil War (Scorpion), 10. Protect and Serve (Li Mei), 11. For the Empire (Sindel), 12. Queen's Gambit (Mileena). Wikipedia says Sub-Zero joins Shang Tsung while Scorpion and Smoke escape, Liu Kang and his allies later team with Outworld to destroy the soul stealers, and Mileena defeats Ermac. Chapter 11 is played as Sindel, not against her.

13. Deadly Alliance (Shang Tsung), 14. Time of Death (Liu Kang), 15. Armageddon (a fighter of your choice). Per Wikipedia, Damashi is revealed as the previous timeline's Shang Tsung, who betrays the sorcerers and attacks with warriors from his timeline; Sindel dies in the fight. Liu Kang then regains his Titan powers and recruits allies from other timelines. The Battle of Armageddon appears in story mode with Takeda and evil versions of Cassie Cage, Kung Jin and Jacqui Briggs. We could not verify the number of fights in Chapter 15 or any Titan Quan Chi Kameo partner.

Wikipedia reports a mid-credits scene introducing Titan Havik, and an esports.gg article reports that completing the campaign unlocks Havik as a playable character (not independently confirmed here). Kameo Fighters are partner characters chosen before each fight; each offers Summons (used while standing in place) and Ambushes (usable at any time), and the base game has 15 Kameo Fighters. Invasions is a separate seasonal online mode played on a board; we could not verify any costume unlock tied to finishing the story chapters.