I've been trying to get the X-ray enthusiast achievement and it's not working. I have zapped the following creatures:

Large Bird
Porcupine
Frog
Bat
Berrybug
Glow Berrybug
Noise Bug
Light Bug
Firefly

Is it possible that the creatures in Italics don't work because they just desintigrate? If they don't work then I need the small bird and something else(perhaps a death biter?). If they do work then I think I should have the achievement by now and I'm encountering some game error. I just want to make sure I'm doing this right before I contact support.
I recently zapped all these creatures in a run so I'm positive I have zapped every creature listed above.