He always figured he'd be able to hear the footsteps before it was too late, but he had also figured that a spy would never be able to find him. His first prediction proved false almost immediately; on his second shift a spy had gotten dangerously close to where he was hiding. Thankfully, his Kukri had been nearby and managed to slash the bugger down the shoulder and, just as he was about to hopefully rid himself of the invisible menace, the Spy had cloaked and ran away, a trail of blood showing where he ran off to. But the Spy was not one of the Sniper's main targets. So instead the backstabbing shape shifter survived, somehow becoming particularly adept at finding where the Sniper hid. It wasn't until two weeks later, when the spy had received a new weapon, that he managed to fool the Sniper.
So after the usual knife-to-some-body part, the Sniper had resumed to his jarate-making, scope-peeking duties. However, when the spy dropped in a second time, the Sniper had figured it was just a figment of his imagination. However, when the clod steel of a blade wiped itself gently along his throat, drawing a slight amount of blood, he knew the spy had returned already. Dropping rifle like a stone, the Sniper once again wielded his Kukri, but in a slight amount of pain, he missed the Spy by an inch. The Spy reacted by slicing straight across his arm and before the Sniper could get another swinging, he slashed deeply across his chest as well. Fighting the pain, the sniper took one violent, blind swing.
And hit the Spy smack dab in the head, killing him instantly.
He would have celebrated with the killing of his main problem if it weren't for the fact that he was, at the moment, fighting to stay conscious. While knowing that his vocal chords should still work, he called out a weak 'Medic!' before involuntarily passing out.
It must have been several hours later when he woke up, no longer in his Sniper's nest. He had been stripped on his weapons, and had bandages over his chest, arm, and neck, along with an IV in his good hand. Too bleary-eyed to fully comprehend what happened, he decided that now would be a good time to fall asleep.