List of Missions in Metal Slug: 1st Mission. The player can play through all missions in one run by failing the vehicle missions and forfeiting any hidden routes.
Key
The number below A and B represent the next mission the Hero takes if he:
- A: Completes a mission
- B: Accesses a Hidden Route, or clears a Prison Camp/Parachute Drop.
List
| No. | Mission Name | A | B |
|---|---|---|---|
| 0 | Emergency Mobilization | 1 | - |
| 1 | Hurry On | 2 | 7 |
| 2 | Slicing Through the Jungle | 3 | - |
| 3 | Battle in the City | 5 | 4 |
| 4 | Underground Battle Pass | 10 | - |
| 5 | Pursuit of the Transport Train | 6 | - |
| 6 | Penetration of the Front Base | 9 | - |
| 7 | Discovery of the Front Base | 8 | 6 |
| 8 | Forced Escape | 3 | 2 |
| 9 | Discovery of a Secret Passage | 10 | 4 |
| 10 | Night Flight | 11 | 13 |
| 11 | Fortress | 12 | 15 |
| 12 | Weapons Dump | 15 | - |
| 13 | Invasion in the Sea of Trees | 14 | - |
| 14 | Weapons Port | 12 | 11 |
| 15 | Breakthrough: With Prejudice | 16 | - |
| 16 | Fierce Battle | Clear | - |
| Metal Slug: 1st Mission | |
| Heroes | Hero |
| NPCs | POW | PHANTOM Squad | Hilde Garn |
| Bosses | Rebel VTOL | Rebel Train | Macba | Rebel Zeppelin | Electromagnetic Crane | Rebel Carrier | Facility Elevator | Rebel Truck | Metal Strider |
| Items | Machine Gun | Rocket Launcher | Shotgun | Special Shot | Rank Medal | Coin | Ammo Crate | Bomb Crate | Gas Can | Food |
| Slugs | SV-000 | Slug Flyer |
| Missions | 0. Emergency Mobilization | 1. Hurry On | 2. Slicing Through the Jungle | 3. Battle in the City | 4. Underground Battle Pass | 5. Pursuit of the Transport Train | 6. Penetration of the Front Base | 7. Discovery of the Front Base | 8. Forced Escape | 9. Discovery of a Secret Passage | 10. Night Flight | 11. Fortress | 12. Weapons Dump | 13. Invasion in the Sea of Trees | 14. Weapons Port | 15. Breakthrough: With Prejudice | 16. Fierce Battle |
| Other | Prison Camp | Parachute Drop | Super Devil Mode |
