Where the fuck are my weapons?!?
I agree with the guy below me, I must have searched like 10 squares and didn't find
a single weapon (but found 2 supply packs). The rest was the same old story, I had to spend more and more time repairing the walls, and was eventually overwhelmed. It gave me an option to restart, but it just started from the same level, (instead of the search screen( so it was hopeless.
Make weapons easier to find (you might have to search for ammo on some of the heavy weapons so it doesn't screw the difficulty curve).
Restart from the search screen instead of heading directly to the level.
Survivors (you would find them and thy would help you fight and repair (as in The Last Stand).