"Hmm, it doesn't seem like radiation weapons are going to be efficient, probably worth testing some other bits though. Let's try 2 kilowatts targeted at the bone plate and then through an eye. 500 nanometers."

Two kilowatts cuts through the bone plate, but that's pretty much it. 

Sending it through an eye is much more effective. The creature convulses, and a muffled roar escapes its muzzle. 

"Hmm, precision targeting seems advantageous. I'll do a kinetic test for comparison." A small ball bearing about a centimeter across floats out of her bag hovers for a second in front of one of the Grimm's other eyes and instantly accelerates with 2 kilojoules of force.

The Grimm appears to have learned something in the last fifteen minutes or so of luminous dissection. In the second the ball bearing is hovering, the Grimm blinks and twitches its head, and the ball bearing merely puts a crack in its bone faceplate. 

"Well, that's inconvenient. Let's do that again. I'll have to account for air resistance then." Another ball bearing hovers out and this time it stops ten meters away, waits for the Grimm to be still and then accelerates.

It works this time. It seems to have penetrated much less deeply, though. Also, the Grimm is running out of eyes.

"So watt for watt it looks like radiation weapons are more efficient. That's certainly good news for being able to supply you with automated defenses against the Grimm. Resupplying ammunition is always a bit inconvenient. Next test, heat. Let's see how it copes with baking a little internally." She targets a few cubic centimeters in the center of its head and introduces 2 kilojoules of heat directly into its body.

It thrashes and smoke leaks from its ears. But it's still moving, and scans indicate less damage than the laser did, even without accounting for the amount of laser that missed and scored the bone plate when the Grimm twitched. 

"Hmm, visually impressive but not actually efficient. Just as well, doing that wouldn't be easy. Is there anything else you think I ought to test? My next idea has at least a decent chance at destabilizing this Grimm and I got the impression it's a pain to get more."

"I'd prefer not to bias you, and I don't know enough about your weapons to say much anyway. What do you have in mind?" Pietro would like to be informed of experiments in advance, please and thank you. The Atlas soldiers are nervous enough as it is. 

"Nothing special just targeting what looks to be a potential vulnerable point in its neck."

"Go ahead." 

Riley rechecks to ensure she's recording as much detail as possible in case it does destabilize and then has the dodec compensate for the Grimm's movement and target its equivalent of a spinal cord.

It jerks once as the lance pierces its neck, then goes limp and starts to disintegrate rapidly. In less than thirty seconds, all that's left is a bit of bone plate and some dirty scuff marks. 

"Well that was effective, also that process was fascinating, I don't see any immediate paths to induce instability but I'll spend some time pouring over it and other members of my working group will too."

"I look forward to discussing your results!"