Within five minutes you should have Terramorphous killed, and if the profile being used kills him for the first time the achievement or trophy will be earned. Finally, summon Terramorphous with the longhorn. Pay the 8 Eridium fee to access it and Terramorphous. Next, travel to Thousand Cuts and follow the mission marker to the entrance to Terramorphous Peak. Then while in Sanctuary in Normal mode, accept the mission from Dr. (Seriously.)' until you have a level 62 or higher character and your current playthrough is inUltimate Vault Hunter mode. To easily kill Terramorphous the Invincible, wait to accept the mission 'You. Also, it should be noted there are 114 non-DLC and non-level specific challenges that need to be done and at least three of them require two or more players. Additionally, just because a weapon challenge has not unlocked yet does not mean the game is not counting progress towards completion if you sometimes do what that undiscovered challenge asks. The easiest way to complete the level 5 weapons challenges is to spend your time exclusively in Southern Shelf and Southern Shelf - Bay where the lowest level enemies spawn.

'Open Wide!'for the shotgun, completion of which unlocks the previously undiscovered Shotgun Sniper challenge) have been completed, which can be a grind even in Normal mode. Note: Some of the undiscovered challenges do not unlock until you reach a certain area in the game or with weapons until a particular weapon's level 5 challenge (i.e. Carefully examine all the non-level specific challenges to see what is required to complete level 1 of each. Play through the Story mode all three times then return to Normal mode with your character of choice. What used to be over $500 to fill your guns now costs about $100. If you are running low on money and need ammunition, go to Southern Shelf and buy some there. Have a saved game file from Borderlands to unlock characters skin from the original game.

Teenage Mutant Ninja Turtles reference.

Easy 'Challenge Accepted' Achievement.

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