How To Complete Challenger’s Deep in Fisch

The Mariana’s Veil update brought five new subareas to Roblox Fisch, one of which is known as Challenger’s Deep. It’s essentially the second cave of the Mariana’s Veil region where you can unlock a variety of upgrades, get a new rod and much more. To help you explore all that in Fisch, we’ve put together this Challenger’s Deep walkthrough.

Fisch Challenger’s Deep Walkthrough

Challenger’s Deep sits below the Volcanic Vents, with the entrance at (-2630, -3830, 755). Just like before, you’ll need to take a tunnel (northwest) to unlock the gear required to go deeper.

At the end, you’ll find a huge ice cave (-835, -3295, -625). Fishing here gives you regular Ocean fish again. Inside, there’s a Submariner, an Inn Keeper, and the Upgrade Station where you grab the Ice Upgrade (needed to go further).

Need to leave? There’s a portal to Roslit Bay at (-735, -3280, -725). You can use it to fast travel to the Roslit Bay area.

Inside Challenger’s Deep, you’ll lose Warmth unless you have:

• Winter Cloak or
• Glimmerfin Suit Lvl 2

If you start freezing, there’s a campfire near the portal at (-760, -3280, -715).

Getting the Ice Upgrade

To unlock it, you need:

• Ice Crystal ×1 (Drill rocks at -800, -3280, -625)
  • Each Rock takes 5 Drills to break and broken rocks respawn after a few seconds.
• Cryoskin ×1
• Polar Prowler ×1 (Fish these in the Ice Tunnel)

Turn these in at the Upgrade Station to get the Ice Upgrade + Glimmerfin Suit Lvl 2.

The Ice Tunnel

To the northwest, there’s an Ice Tunnel leading to a pool where you can fish up the materials for the Ice Upgrade & bestiary.

With the Ice Upgrade and Glimmerfin Suit Lvl 2, you’re all set to leave Challenger’s Deep and head even further down.