- 50 Corrosive Crystals collected
Corrosive Crystal: It hisses as acid seeps from the surface.
- "Corrosive Elemental Artifacts allow you to customize your skills with the power of acid. The key component for such an artifact is the Corrosive Crystal. I can fashion an artifact for you, but you'll need to provide the crystals. Go to the Tetanus Warren and shoot the Crystal Clusters to break them apart. Watch out for the bandits that have taken over the cave."
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Head to Tetanus Warren, which is in the New Haven zone, to begin. There is a Fast Travel point inside. Head up the main path and you will come across the first cluster. Head through the little gate and you will see two more clusters guarded by spiderants. A little further up is a fourth cluster. A little further up ahead again is a fifth cluster. From here, there are 3 paths. First, go to the southwest one and get the mission Claptrap Rescue: Tetanus Warren. There isn't anything down that path besides a big chest so we will skip it in the guide. Now, go back head down the left path. There will be 2 more clusters before a bandit filled camp. Keep along the left wall and in a new acid pool area, there will be 2 more clusters with a bunch of spiderants. This should fill up your requirement of 50. It is suggested you finish up your Claptrap Rescue and do King Tossing while you are here as well.
- "These crystals are perfect! Here's the artifact I promised. Enjoy your corrosive new ability!"