The Traverse Wall obstacle it's really like a rock climbing and it won't be easy.
Depending on conditions, ( the wheater, how much runners doing it simultaneously, etc.), each one of these things can change the level of difficulty.
Furthermore is one of the obstacles that favors shorter stature.And to make it more complicated you could be facing a Z-Wall with angles of 90 degrees, some of them blind.
The only thing you need is the right Spartan Traverse Wall technique!
You don't want to stay on this obstacle too long, the longer you do, the more your fingers will be taxed.
Do not put both hands on the same block, but maintain a wider hand position. This requires less arm strength allows the center of gravity to stay closer to the wall.
Keep the pelvis as near the wall as possible. Doing so you'll change your center of gravity unloading the weight on your legs, allowing you to move faster and lightly.
Try to focus on your hands, if you lose your grip it'll be harder to recover. Take a few minutes to find the driest wall possible, reducing your odds of slipping.
Before you attacks the traverse wall, wipe off your hands and feet from the mud.