I need help creating a survival map

You know the maps where you have to survive for like 30 or 20 minutes? How do I go about accomplishing something like this? I've tried to make one, but I can't seem to figure it out which triggers to use. Help please?

By the way, this is a map against 2 other players; no computer players. I have to survive for 30 minutes against these guys which gives them only 30 minutes to destroy me. How would I create something like this?

There are tons of genres of maps to survive for a duration, but I'm guessing if you are against 2 other players it would be a tag map?

Well, it does not matter anyway. First, create a timer. Create a timer variable, start it at the beginning of the map or whenever you want to start the countdown. Insert the desired amount of time needed to survive. Detect when it expires, and then do your actions accordingly.

EDIT: If you're using GUI, look under "Countdown Timer ->" actions.

Its a survival map just like the 3rd mission from the Starcraft Terran campaign and just like the 5th mission of the WC3 Human campaign. Only; instead of me surviving against computer players; I am surviving against 2 Human Players.

there is *my* vampirism map, few modifications (remove preplaced units and debug trigger) and its ready.

all triggers you may need for your own tag\survival is included.



*actually this is remake of vampirism fire.