Borderlands missions flow

Side missions are italic

Fresh Off The Bus
 * The Doctor Is In
 * Skags At The Gate
 * Claptrap Rescue
 * Fix'er Upper
 * Blinding Nine-Toes
 * Nine-Toes: Meet T.K. Baha
 * Nine-Toes: T.K.'s Food
 * Got Grenades?
 * Nine-Toes: Take Him Down
 * Nine-Toes: Time To Collect
 * Job Hunting
 * Catch-A-Ride
 * Bone Head's Theft
 * The Piss Wash Hurdle
 * Return To Zed
 * Sledge: Meet Shep
 * Sledge: The Mine Key
 * Sledge: To The Safe House
 * Sledge: Battle For The Badlands

Leaving Fyrestone
 * Getting Lucky
 * Powering The Fast Travel Network
 * Road Warriors: Hot Shots
 * Road Warriors: Bandit Apocalypse

Power To The People
 * Seek Out Tannis
 * Meet 'Crazy' Earl
 * Today's Lesson: High Explosives
 * Get Off My Lawn!
 * Hair Of The Dog
 * The Next Piece
 * Jaynistown: Secret Rendezvous
 * Jaynistown: A Brother's Love
 * Jaynistown: Spread The Word
 * Jaynistown: Getting What's Coming To You
 * Jaynistown: Unintended Consequences
 * Jaynistown: Cleaning Up Your Mess
 * Another Piece Of The Puzzle
 * Not Without My Claptrap

The Final Piece
 * Get Some Answers
 * Find The Echo Command Console
 * Reactivate the ECHO Comm System
 * Find Steele
 * Destroy The Destroyer
 * Bring The Vault Key To Tannis

Missions with unkonwn source
 * A Bug Problem
 * Altar Ego: Burning Heresy
 * Altar Ego: Godless Monsters
 * Altar Ego: The New Religion
 * Bait And Switch
 * Bandit Treasure: Three Corpses, Three Keys
 * Bandit Treasure: X Marks the Spot
 * Big Game Hunter
 * Braking Wind
 * By The Seeds Of Your Pants
 * Circle Of Death: Final Round
 * Circle Of Death: Meat And Greet
 * Circle Of Death: Round 1
 * Circle Of Death: Round 2
 * Circle Of Slaughter: Final Round
 * Circle Of Slaughter: Meat and Greet
 * Circle Of Slaughter: Round 1
 * Circle Of Slaughter: Round 2
 * Claptrap Rescue missions
 * Claptrap Rescue: Crimson Fastness
 * Claptrap Rescue: Krom's Canyon
 * Claptrap Rescue: New Haven
 * Claptrap Rescue: Old Haven
 * Claptrap Rescue: Safe House
 * Claptrap Rescue: Scrapyard
 * Claptrap Rescue: Tetanus Warren
 * Claptrap Rescue: The Lost Cave
 * Claptrap Rescue: The Lumber Yard
 * Claptrap Rescue: The Salt Flats
 * Claptrap Rescue: Trash Coast
 * Corrosive Crystal Harvest
 * Death Race Pandora
 * Dumpster Diving For Great Justice
 * Earl Needs Food...Badly
 * Earl's Best Friend
 * Find Bruce McClane
 * Firepower: All Sales Are Final
 * Firepower: Market Correction
 * Firepower: Plight Of The Middle Man
 * Fuel Feud
 * Get A Little Blood On The Tires (Mission)
 * Get The Flock Outta Here
 * Ghosts of the Vault
 * Green Thumb
 * Hidden Journal: Rust Commons East
 * Hidden Journal: Rust Commons West
 * Hidden Journal: The Arid Badlands
 * House Hunting
 * I've Got A Sinking Feeling...
 * Insult To Injury
 * Is T.K. O.K.?
 * Jack's Other Eye
 * King Tossing
 * Like A Moth To Flame
 * Middle Of Nowhere No More: Fuses? Really?
 * Middle Of Nowhere No More: Investigate
 * Middle Of Nowhere No More: Scoot On Back
 * Middle Of Nowhere No More: Small Favor
 * Missing Persons
 * Product Recall
 * Relight The Beacons
 * Scavenger: Combat Rifle
 * Scavenger: Machine Gun
 * Scavenger: Revolver
 * Scavenger: Shotgun
 * Scavenger: Sniper Rifle
 * Scavenger: Submachine Gun
 * Schemin' That Sabotage
 * Scooter's Used Car Parts
 * Shock Crystal Harvest
 * Smoke Signals: Investigate Old Haven
 * Smoke Signals: Shut Them Down
 * T.K. Has More Work
 * T.K.'s Life And Limb
 * The Legend Of Moe and Marley
 * Two Wrongs Make A Right
 * Up To Our Ears
 * Wanted: Fresh Fish
 * Well There's Your Problem Right There
 * What Hit The Fan
 * Why Are They Here?