How many chapters are in LEGO Batman: Legacy of the Dark Knight?
7 chapters — a Prologue plus Chapters 1 through 6 — with roughly 29 named story missions in total.
The campaign is structured as a Prologue plus six main chapters. The Prologue covers Bruce's training with the League of Shadows; Chapter 1 introduces Carmine Falcone and the Red Hood Gang; Chapter 2 brings the Penguin, the Flugelheim and Joker; Chapter 3 covers Two-Face, Kite-Man and Poison Ivy; Chapter 4 features Firefly, Batgirl's debut and Mr. Freeze; Chapter 5 is the Tumbler Chase and Arkham Asylum; Chapter 6 closes with Bane and Talia al Ghul. Across all chapters there are about 29 named missions.