The glow does not seem to give off any heat and goes away as soon as you move your hands away.
The light source seems to be above you, though you are not sure. The smoke/fog around you makes it hard to see very far.
You bend down to examine the robot in front of you, and start searching for some kind hatch that could contain batteries.
The search seems fruitless until you start examining the head. Near the back of it, you see a small square panel. Prying it open, you find a small twisted, charred piece of metal inside. You take it out to examine it.
Suddenly, with a lot of creaking and grinding, the robot stands up and looks at you.
A minute of silence passes, and the robot continues standing there, as if waiting for orders. You decide to ignore it for now.
Your armor's fastening is a small strip of rusty metal, not springy enough to be used for a crossbow.
You found it lying among the rubbish. It may have had something written on it at some point, but it is impossible to tell now.
Which tools do you want to make?