Below is a walkthrough for the Shrine of Aaron G in Tiny Tina’s Wonderlands. You can find this shrine at the below location.
To complete this shrine, you’ll need to find all the shrine pieces.
Shrine Piece 1
Complete the encounter to receive the shrine piece as your prize.
Shrine Piece 2
Deactivate the barrier then retrieve the piece.
Shrine Piece 3
Complete the encounters to receive the shrine piece as your prize.
Shrine Piece 4
This dungeon is available after completing the Pocket Sandstorm side quest.