This scorpion-like boss is easiest to defeat by hitting it from behind. Use the Nova weapon to shoot underneath it and detonate the projectile behind its shell.
Stay on the move and use the Axiom Disruptor . Holding L1 (by default) locks your position, allowing you to aim at angles without moving. File: Axiom.Verge.v1.43.zip ...
If you encounter a bug where sound cuts out when the game is in the background, you can fix it using the Special K tool . Copy SpecialK32.dll to the game folder, rename it to OpenGL32.dll , and edit the OpenGL32.ini file to set MuteInBackground=true . This scorpion-like boss is easiest to defeat by