Pitfalls of Life is the fourth stage in Stairway to Darkness, sub-chapter 21.
Begin the battle, spawn defensive meatshield cats, Crazed Sexy Legs Cat, Island Cat, and Crazed Whale Cat to defeat the Bore in the front, and spawn the Titan cats (to damage the Sunfish Jones) if the next Bore has not reached the front yet.
After the player defeats 3 Bores, only spawn the Titan Cats because the respawn time for the fourth Bore is especially longer. Use the strategy above to defeat the fourth Bore and use the Titan Cats to damage the Sunfish Jones. By the way, if you want to finish off Sunfish Jones quickly, you may use Awakened Bahamut Cat to finish it off.
Or just use 4 meatshields with Momotaro lvl 25 with A Bahamut.