I think he carried a two tone XD.
Agreed with most of the points made so far, he had the entire city to work in, and the best he can do is a row house with some storm shutters? I can see trying to have as many comforts as possible, to ward off insanity, but when you're the only human in a city of ravenous monsters, you can't count on being able to hide forever. The grenade part surprised me as well, given that he ended up obliterating his research data and the cure as well, so the other survivors would have to reverse engineer his formula, assuming they even had the capabilities to do so. Also, I got a kick out of how he was saving his recordings to "six redundant hard drives"...stacked on top of each other :banghead: