Their Expedition relied partially on nakedness. They worked out to extreme levels to put themselves in peak physical shape, and they didn't want their bodies to be weighed down by heavy uniforms, so they ventured forward naked. The incredible thing is that they were actually pretty successful. They even managed to get through the barrier around the monolith without any special weaponry, just their strength. They even figured out that The Paintress wasn't the real threat. So, all are just holding you back.
None of these journal entries hold a candle to Expedition 60. While much of Expedition 33’s success comes from its use of the Lumina Converter, the in-universe tool that powers Clair Obscur’s Picto trait customization system, Expedition 60 was able to make it all the way to the Paintress without such frivolity. They even managed to break through the barrier surrounding her monolith through pure strength alone, and did it all while entirely naked to boot. I’ve included the entire text of the journal below because there’s no way a mere summary could do it justice.
