Ok i have seen people getting mixed up (me being one of them but i figured it out now) with which missions are side or for the main story.

 Chapter 1: Missions in the Arid Badlands Area

Plot Mission 01 Fresh off the bus - Guardian Angel
Plot Mission 02 The Doctor is in - Dr. Zed
Plot Mission 03 Skags at the gate - Dr. Zed
Plot Mission 04 Claptrap Rescue - Claptrap
Plot Mission 05 Fix'er Upper - Dr. Zed
Plot Mission 06 Blinding Nine-Toes - Dr. Zed
Plot Mission 07 Nine-Toes: Meet T.K. Baha - Dr. Zed
Plot Mission 08 Nine Toes: T.K.'s Food - T.K. Baha
Plot Mission 09 Got Grenades? - T.K. Baha
Plot Mission 10 Nine-Toes: Take Him Down - T.K. Baha
Plot Mission 11 Nine-Toes: Time To Collect - T.K. Baha
Plot Mission 12 Job Hunting - Dr. Zed
Side Mission 01 Hidden Journal: The Arid Badlands - Fyrestone Bounty Board
Side Mission 02 T.K. Has More Work - T.K. Baha
Side Mission 03 T.K.'s Life and Limb - T.K. Baha
Side Mission 04 By The Seeds Of Your Pants - T.K. Baha
Side Mission 05 Why are they here? - Fyrestone Bounty Board
Plot Mission 13 Catch-A-Ride - Scooter
Plot Mission 14 Bone Head's Theft - Scooter
Side Mission 06 Claptrap Rescue: Safe House - Claptrap
Side Mission 07 Claptrap Rescue: The Lost Cave - Claptrap
Side Mission 08 Get A Little Blood on the Tires - Fyrestone Bounty Board
Plot Mission 15 The Piss Wash Hurdle - Scooter
Side Mission 09 Shock Crystal Harvest - Fyrestone Bounty Board
Plot Mission 16 Return to Zed - Scooter
Plot Mission 17 Sledge: Meet Shep - Dr. Zed
Side Mission 10 Braking Wind - Shep Sanders
Side Mission 11 Get The Flock Outta Here - Shep Sanders
Plot Mission 18 Sledge: The Mine Key - Shep Sanders
Side Mission 12 Scavenger: Sniper Rifle - Fyrestone Bounty Board
Side Mission 13 The Legend Of Moe and Marley - Fyrestone Bounty Board
Side Mission 14 Circle of Death: Meet and Greet - Fyrestone Bounty Board
Side Mission 15 Circle of Death: Round 1 - Rade Zayben
Side Mission 16 Circle of Death: Round 2 - Rade Zayben
Side Mission 17 Circle of Death: Final Round - Rade Zayben
Plot Mission 19 Sledge: To The Safe House - Shep Sanders
Side Mission 18 What Hit The Fan - Shep Sanders
Side Mission 19 Scavenger: Combat Rifle - Fyrestone Bounty Board
Plot Mission 20 Sledge: Battle For The Badlands - Shep Sanders
Side Mission 20 Insult To Injury - Fyrestone Bounty Board
Side Mission 21 Find Bruce McClone - Fyrestone Bounty Board
Side Mission 22 Product Recall - Fyrestone Bounty Board
Side Mission 23 Schemin' That Sabotage - Fyrestone Bounty Board

Chapter 2: Missions in the Dahl Headland Area

Plot Mission 21 Leaving Fyrestone - Dr. Zed
Side Mission 24 Big Game Hunter - Ernest Whitting
Plot Mission 22 Getting Lucky - Ernest Whitting
Plot Mission 23 Powering The Fast Travel Network - Lucky Saford
Side Mission 25 Fuel Feud - Lucky's Bounty Board
Side Mission 26 Well There's Your Problem - Lucky's Bounty Board
Side Mission 27 Death Race Pandora - Lucky's Bounty Board
Side Mission 28 Scavenger: Revolver - Lucky's Bounty Board
Side Mission 29 Ghosts of The Vault - Lucky's Bounty Board
Plot Mission 24 Road Warriors: Hot Shots - Lucky Zaford
Plot Mission 25 Road Warriors: Bandit Apocalypse - Lucky Zaford

Chapter 3: Missions in the New Haven Area

Side Mission 30 Claptrap Rescue: New Haven - Claptrap
Side Mission 31 Claptrap Rescue: Tetanus Warren - Claptrap
Side Mission 32 Corrosive Crystal Harvest - New Haven Bounty Board
Side Mission 33 King Tossing - New Haven Bounty Board
Side Mission 34 Is T.K. O.K.? - Scooter
Side Mission 35 Like A Moth To Flame - New Haven Bounty Board
Plot Mission 26 Power To The People - Helena Pierce
Side Mission 36 Up to Are Ears - Scooter
Side Mission 37 Scooter's Used Car Parts - Scooter
Side Mission 38 Hidden Journal: Ruest Commons West - New Haven Bounty Board
Side Mission 39 Scavenger: Submachine Gun - New Haven Bounty Board
Side Mission 40 Firepower: All Sales are Final - Marcus Kincaid
Side Mission 41 Firepower: Market Correction - Marcus Kincaid
Side Mission 42 Firepower: Plight of the Middle Man - Marcus Kincaid
Side Mission 43 Jack's Other Eye - Helena Pierce
Plot Mission 27 Seej Iyt Tabbus - Helena Pierce
Plot Mission 28 Meet " Crazy" Earl - Patricia Tannis
Side Mission 44 Claptrap Rescue: Scrapyard - Claptrap
Plot Mission 29 Get Off My Lawn - Crazy Earl
Plot Mission 30 Today's Lesson: High Explosives - Crazy Earl
Plot Mission 31 Hair of the Dog - Crazy Earl
Side Mission 45 Claptrap Rescue: Krom's Canyon - Claptrap
Side Mission 46 Earl Needs Good Badly - Crazy Earl
Side Mission 47 Missing Persons New Haven Bounty Board
Side Mission 48 Two Wrongs Make Right - New Haven Bounty Board
Side Mission 49 Middle of Nowhere No More: Investigage Helena Pierce
Side Mission 50 Middle of Nowhere No More: Fuses? Really? - Hudson Johns
Side Mission 51 Middle of Nowhere No More: Small Favor - Hudson Johns
Side Mission 52 Middle of Nowhere No More: Scoot On Back - Hudson Johns
Side Mission 53 Scavenger: Shotgun - Middle of Nowhere Bounty Board
Side Mission 54 Altar Ego: Burning Heresy - Middle of Nowhere Bounty Board
Side Mission 55 Circle Of Slaughter: Meat and Greet - Middle of Nowhere Bounty Board
Side Mission 56 Circle Of Slaughter: Round 1 - Chuck Durden

Side Mission 57 Circle Of Slaughter: Round 2 - Chuck Durden
Side Mission 58 Circle Of Slaughter: Final Round - Chuck Durden
Side Mission 59 Hidden Journal: Rust Commons East - Middle of Nowhere Bounty Board
Plot Mission 32 The Next Piece - Crazy Earl
Side Mission 60 Altar Ego: The New Religion - Middle Of Nowhere Bounty Board
Side Mission 61 Altar Ego: Godless Monsters - Middle of Nowhere Bounty Board
Side Mission 62 A Bug Problem - Middle of Nowhere Bounty Board
Side Mission 63 Relight The Beacons - Helena Pierce
Side Mission 64 Green Thumb - Stance Von Kofsky
Side Mission 65 Smoke Signals: Investigate Old Haven - Helena Pierce
Side Mission 66 Smoke Signals: Shut Them Down - Helena Pierce
Side Mission 67 Claptrap Rescue: Old Haven - Claptrap
Side Mission 68 Bandit Treasure: Three Corpses, Three Keys - Dead Bandit
Side Mission 69 Bandit Treasure: X Marks The Spot - Dead Bandit
Plot Mission 33 Jaynistown: Secret Rendezvous - Patricia Tannis
Plot Mission 34 Jaynistown: A Brother's Love - Taylor Kobb
Side Mission 70 Dumpster Diving for Great Justice - Erik Franks
Plot Mission 35 Jaynistown: Spread the Word - Taylor Kobb
Plot Mission 36 Jaynistown: Getting What's Coming to You - Erik Franks
Side Mission 71 I've Got A Sinking Feeling - Scooter
Side Mission 72 Wanted: Fresh Fish - New Haven Bounty Board
Plot Mission 37 Jaynistown: Unintended Consequences - Erik Franks
Plot Mission 38 Jaynistown: Cleaning Up Your Mess - Helena Pierce
Side Mission 73 Bait And Switch - Middle of Nowhere Bounty Board
Side Mission 74 Claptrap Rescue: Trash Coast - Claptrap
Side Mission 75 Earl's Best Friend - Crazy Earl
Side Mission 76 House Hunting - Middle Of Nowhere Bounty Board
Plot Mission 39 Another Piece Of The Puzzle - Guardian Angel
Plot Mission 40 Not Without My Claptrap - Patricia Tannis

Chapter 4: Missions in the Salt Flats Area

Side Mission 77 Claptrap Rescue: The Salt Flats - Claptrap
Side Mission 78 Scavenger: Machine Gun - Middle of Nowhere Bounty Board
Plot Mission 41 The Final Piece - Patricia Tannis
Side Mission 79 Claptrap Rescue: Crimson Fastness - Claptrap
Plot Mission 42 Get Some Answers - Patricia Tannis
Plot Mission 43 Find the ECHO Command Console - Patricia Tannis
Plot Mission 44 Reactivate the ECHO Comm System - Patricia Tannis
Plot Mission 45 Find Steele - Patricia Tannis
Plot Mission 46 Destroy the Destoryer - Guardian Angel
Plot Mission 47 Bring The Vault Key to Tannis - Patricia Tannis

Have you done all of the side missions?

If so, does one of them unlock all of the options in the arenas?  I still don't know how to check or uncheck what weapon types are allowed.

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TheShindig wrote:

Have you done all of the side missions?

 

If so, does one of them unlock all of the options in the arenas?  I still don't know how to check or uncheck what weapon types are allowed.

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I havent done all the side missions and i havent did the one where you unlock all the options in the arenas ( if youre wondering how i made the list without doing all the side missions is simple i did the story mode then everything left is side missions)