No it was literally called 'nazi zombie barrier script' or something it was pretty lame compared to whats probably come and gone in the mean time.
One slight addendum to my original post is that I've been playing around with the Anykeywithinzone= command a little lately, just have a script in a trigger zone in front of the barrier, set the usekey field of the trigger zone to whatever the name of your enemies name parameter is ie 'zombie001' then whenever our friend zombie001 enters the triggerzone that command will recognize that, set a timer up so that once the enemies been in the zone a set amount of time then it sets a global variable that the barrier script looks at, once the variable hits a certain threshold boom. destroy the barrier.
Im sure there are probably simpler ways of doing it but this is kinda flexible as that variable allows you the option of a repair action the player can use to repair the barricades, and easliy be integrated into a system where the player could use currency to instantly reset all the barriers, make it harder by having them all come down at once, power ups that temporarily make the barriers invincible etc etc all by simply altering that root variable
smoke em if you got em