These are all the eridian waepons. total of 7. some eridian weapons look the same as other just have different damage. 1. Thunder Storm (shotgun w/ electric dmg) 2. Wave Blaster (grenade launcher w/ electric dmg) 3. Mercurial Blaster (high RoF plasma smg) 4. Eridian Lightning (sniper w/ electric dmg) 5. Ball Blaster (shoots homing plasma blasts) 6. Cannon (rocket launcher) 7. (Last one) Eridian Blaster (slower and less powerful version of mercurial blaster) ... xbox 360 borderlands eridian ...