To get Thunder Spears in SNK: Rumbling on Roblox, you usually need to unlock the Thunder Spears quest line first , then finish the required missions and claim them from the quest menu.

What to do

  1. Reach the required prestige
    • The guide found says you need Prestige 1 before you can start the Thunder Spears quest line.
  1. Complete the quest chain
    • The video guide says the quest line includes tasks like:
      • building 3 watchtowers on the Outskirts map on Aberrant difficulty,
      • collecting 3 Ice Burst Stones on the Octard map,
      • retrieving 3 missing supply crates in the Giant Forest map on Aberrant difficulty.
  1. Claim Thunder Spears
    • After finishing the quests, open the Quest menu and claim Thunder Spears there.
  1. Upgrade them
    • The guide also says Thunder Spears are not maxed automatically , so you’ll need to upgrade them separately with in-game money.

Fast tips

  • Run the missions on the stated difficulty so the quest progress counts.
  • For the crate and tower quests, stick close to the objective area and clear Titans first to avoid failing the task.
  • If your game version is different, the quest names or map names may have shifted a bit, but the unlock flow still appears to be prestige first, then quest line, then claim.

TL;DR: Get to Prestige 1 , finish the Thunder Spears quest chain, then claim them from the quest menu.