BULLET SOUL

Geruge are large centipede-like creatures that appear about halfway through the stage, they look like the achievement's icon except longer and greener. You will encounter two or three before you finish stage 3. The Geruge will crawl down from the top middle-ish area, turn off towards one side or the other and crawl off screen momentarily, then coil back around and crawl back up and off screen.

To pop this achievement, you need to destroy all of the body armor segments on one of these critters before killing it by destroying the head. I did it with Sadahl, but really you could use anyone. Just stop firing for a second when you first see a Geruge coming down -- figure out which direction it's going, and line yourself up so that your shots are hitting body pieces but not the head.

If you're using Yun, I recommend using her cross shot / focused attack () but make sure your green lasers aren't locking onto the Geruge's head.

For Zenichi, I also recommend his cross shot, but get in a bit closer to the creature's body and move laterally with it as even the focused attack still has a good bit of spread to it.

Using Sadahl, fire his rapid shot / wide attack () which will project a slightly wider but much shorter drill section in front of you - get in close and rub this all over Geruge's body for fun and profit. When it comes back on screen the second time and most or all of its armor pieces are destroyed, then switch to focused () and attack the head from directly below as this will also have your ancillary shots lock on for more damage.

With Loop, you'll want to stay further back and fire her wide shots (), focusing the center beam on the body sections, when a Geruge first appears. When it comes back on screen the second time, switch to focused () and move with the creature staying beside it, this way your high damage "fists" will quickly pummel any remaining armor bits without your focused laser melting the head first.