Probably already done before, but screw it, let's do this.
1) My lover. I don't care if we're not enough to repopulate the earth, I just want to be with her until the end.
2) My AKMs. Semi-automatic fire, open-top sights, very, very large ammo capacity with a heavy round that can pierce armor and cause serious tissue damage. Also has polymer furniture and an underfolding skeleton stock for very light weight and close-quarter maneuverability. Not to mention its extremely low maintenance requirements: all it takes to clean the bore is some gasoline and a knotted-up shoelace, and the only thing that can make it jam is very poor-quality ammunition.
3) Extra ammunition. Self explanatory. Preferably of Russian or Ukranian manufacture.
4) Thermal NVGs. Nighttime navigation can be a very dangerous thing, especially if your hearing has been dulled by a long day of gunfire. Also, I wouldn't want to use a flashlight, as that could attract hostiles.
5) Lots and lots of water, possibly loaded on a horse or pack mule. Food can be scavenged along the way, but clean water will become harder and harder to come by, and water is not optional.