Quote: --- Original message by: ASP_GRUNTS

(script static unit player
	(unit (list_get (players) player_number))
)

(script continuous damageplayer
	(if (= (volume_test_object tvolname (player)) true)
		(if (= (unit_get_shield (player)) 0)
			(unit_set_current_vitality (player) (- (unit_get_health (player)) 1) (unit_get_shield (player)))
			(unit_set_current_vitality (player) (unit_get_health (player)) (- (unit_get_shield (player)) 1))
		)
	)
	(set player_number (+ player_number 1))
	(if (= player_number 16)
		(set player_number 0)
	)
)

There might be a few errors in there I overlooked in the parenthesis, but it has all of the essential pieces in there.
Any player, once in the specified trigger volume (replace tvolname with the name), will recieve a damage of 1 on his shields, until the shields reach 0, and that's when it will damage the health of that player by 1.
Keep in mind, a player's default shield and health amount is 75. The script runs 30 times a second. It will take exactly 2.5 seconds (2.5x30=75) for the shields to run out, and another 2.5 seconds for the health to run out, and the player will die. You can change the amount of damage the player is taking in the script. If you wish to do so, tell me and I'll explain further on how to do that, if you don't know.