Things You'll Need
Instructions
Open the Willowtree editor.
Click the "Quests" folder to open the available quest saved game data for Borderloands.
Open the "PT2" folder.
Delete all the quest logs except for the following:
Z2_Missions.Missions.M_FindSteele
Z2_Missions.Missions.M_FindTheVault
Z0_Missions.Missions.M_AccessStores
Z0_Missions.Missions.M_FixHealthVending
Z0_Missions.Missions.M_IntroStateSaver
Z0_Missions.Missions.M_KillBandits
Z0_Missions.Missions.M_KillSkags_Zed
Z0_Missions.Missions.M_MeetAl
Z0_Missions.Missions.M_RepairClapTrap_02
dlc3_MainMissions.MainMissions.M_dlc3_GetLoot
dlc3_SideMissions.SideMissions.M_dlc3_GetLoot02
Place a check next to the "Reset Playthrough 2" and "Enable Dynamic Scaling" boxes.
Click "File," then "Save" to complete resetting the second playthrough.