The first time any game character I control dies in a game, a little bit of the edge of a game comes off since every death after that is just another death. So if we pretend the first time Lee died in your game is as far as he (you) got in the zombie Apoc. as written by Telltale, when was it?
Mine came after killing Larry in the storage room and escaping. When I peeked out of the stall door in the barn and saw the brother with a shotgun in my face I just froze, thought, "Oh crap", then, BLAMO.