This is something like a walkthrough. I'm just giving some advices on what to do to find it easier:
1)Search All the buildings in a city(except Jonestown which i will talk for later).
2)When you pass the first city,go to the big city with 60.000 pop,Claysburg.It will be a little harder than the smaller one, but it has many supplies.
3)Then go to Aspenwood.It has only 1000 pop but it is hard. However,put always traps and stay enough there because The next city is much harder and you need enough supplies to stay only 1 - 2 nights otherwise you're gone.
4)This is Jonestown,the hardest city in the game. When you get there you should have 5 - 6 supplies so you could leave immediately.Not much else to say here(Of course if you are a good enough gamer you can stay and find The AK-47 and the M16 but i don't suggest it )
5)Now Don't go to the Union City. Go to Fort tram.The best and easiest city in the game.You find the best weapons there(Heavy Machinegun,Rpg,Grenades).There you go just for fun.When you get the RPG put it primary weapon and give all the others to your partners.It can kill three fat Zombies running with only one shell.It is excellent.
6)If you don't find the RPG and you don't have much time (and if you want to finish the game on time)then go to union city.It Must be day 38 WHEN YOU ARRIVE.Now good finishing on the game.
Cool,I never gone to fort tram.I always was running out of time so I never want there.But with these tips I had like 10 days.It was fun playing with the Heavy Machinegun .
Hmm.. i was play Last Stand 2, but i think to beat up the zombies. You need Primary Weapon AK-47 or M16.. and the Secondary Weapon is Chainsaw. Chainsaw really good at slashing zombies at melee range
Then when you go to Fort Tran, find RPG Launcher and Blast off the zombies. when i play it to Fort Tran. I still got 6 or 9 days to Union City