diff -r f30eab4b9b05 -r d62d6f8ebef1 share/hedgewars/Data/Missions/Training/Basic_Training_-_Grenade.lua
--- a/share/hedgewars/Data/Missions/Training/Basic_Training_-_Grenade.lua	Tue Apr 11 02:11:49 2017 +0200
+++ b/share/hedgewars/Data/Missions/Training/Basic_Training_-_Grenade.lua	Tue Apr 11 02:44:59 2017 +0200
@@ -82,6 +82,9 @@
 	Map = "Battlefield"
 	-- The theme to be used
 	Theme = "Castle"
+	-- Setting these 2 values to 0 is the official way to disable Sudden Death cleanly
+	HealthDecrease = 0	-- Sudden Death damage
+	WaterRise = 0		-- Water rise in Sudden Death
 
 	-- Create the player team
 	AddTeam(loc("Grenadiers"), 14483456, "Simple", "Island", "Default", "cm_grenade")