Borderlands (JP)

Arid Badlands is the starting area of the game, there are 44 missions that you will need to complete for this achievement.

The missions are:
Beginning tutorial and Nine-toes missions
• Fresh Off The Bus - Guardian Angle
• The Doctor Is In - Dr. Zed
• Skags At The Gate - Dr. Zed
• Claptrap Rescue -Claptrap
• Fix’er Upper - Dr. Zed
• Blinding Nine-Toes - Dr. Zed
• Nine-Toes: Meet T.K Baha - Dr. Zed
• Nine-Toes: T.K’s Food - T.K. Baha
• Got Grenades? - T.K. Baha
• Nine-Toes: Take Him Down - T.K. Baha
• Nine-Toes: Time To Collect - T.K. Baha
• Job Hunting - Dr. Zed
• Sledge: Meet Shep - Dr. Zed
Catch A Ride Missions
• Catch-A-Ride
• Bone Head’s Theft
• The Piss Wash Hurdle
• Return to Zed
Shep Sanders
• Sledge: The Mine Key
• Sledge: To The Safe House
• Sledge: Battle For The Badlands
• Claptrap Rescue: Sledges's Safe House *
• Side Missions – Shep Sanders
• Get The Flock Outa Here
• Breaking Wind
• What Hit The Fan?
T.K Baha Side Missions
• T.K Has More Work
• T.K’S Life & Limb
• By The Seeds Of Your Pants
Fyrestone Bounty Board
• Circle Of Death: Meat & Greet (More in Circle of Death)
• Why Are They Here?
• Get A Little Blood On The Tyres
• Hidden Journal: The Arid Badlands
• Shock: Crystal Harvest
• Claptrap rescue Lost Cave *
• Scavenger: Sniper Rifle
• Scavenger: Combat Rifle
• The Legend Of Moe & Marley
• Find Bruce McClane
• Product Recall
• Insult To Injury
• Scheming Sabotage
Circle of Death
• Circle Of Death: Round 1
• Circle Of Death: Round 2
• Circle Of Death: Final Round

Once you have completed all of these the achievement will be yours, if you don't do this on your first playthrough then the achievement will unlock at the beginning of your second playthrough no matter what.