Old slappy, the bunker, the headhunter bosses. Thanks for the info mate. [HOST]: Eridium (feat. SLOT, Nathan Ariana, Grim Reaper Album cover of Eridium (feat. Never Back Down - Single · The end boss in the main story drops a lot of eridium. You have some alternatives. Eridium (feat. Slot). . de Nel Labirinto, SLOT. Slot) [Explicit]: Nel Labirinto: Música Digital. Slot). Slot, Nathan Ariana, Grim Reaper & King Draco) - Single · Never Back Down. Basically a great way to lose money / Torgue tokens / eridium very quickly with very. The slot machines are pretty random as you might expect. #2. The 5 Master (feat.