Make off to CVG:

"Big, friendly-eyed Labradors. The first glimpse of one as it peered through a window had Alyx urging me to hide, but that Hunter really looked like a dog who wanted to be where you were, but couldn't quite get there so instead decided to gaze at you longingly. It looked sad. Poor Hunter.

Pretty soon after this, the Hunter was firing its sticky, explosive ordnance at me. Glowing blue darts fire in sets of threes, sticking to the surfaces around my hiding spot and exploding shortly thereafter. This sort of weapon forces you to keep moving - and the Hunter takes some beating before it finally swoons."