Rodent of Uncertain Parentage
Ah, got it. Well, assuming the five of us can collectively toss 1 weapon into the tower every 2 seconds (seems realistic once we get a moving-chain going, and since we're not trying to stack them neatly or anything), it would take between 3 and 7 minutes to get them all in... which is about how much time we think we have before the mob arrives, yes?100 to 200 weapons. You aren't sure how many humanoids there are out there - too dark! Your best guess was about 50.