You might want to swap out the Ladders for a stack of Mageflare Runes, since they're really useful in the deeper layers and make it much easier not to miss any restore cells (use them every 5-6 digs down). You might also want to swap out the Diamond Pickaxe for Titanium Pickaxe, as the chance of a free dig is more useful if you're trying to reach water. If it still feels too difficult, you could leave the achievement for later and focus on crafting the Signpost first. With late-game Farfields stats and equipment, you'll be able to breeze through the Fashion Statement achievement easily.