diff -r 9c7d5f595881 -r 6c21bd8547dd share/hedgewars/Data/Missions/Challenge/User_Mission_-_That_Sinking_Feeling.lua
--- a/share/hedgewars/Data/Missions/Challenge/User_Mission_-_That_Sinking_Feeling.lua	Mon Dec 10 07:35:29 2018 +0100
+++ b/share/hedgewars/Data/Missions/Challenge/User_Mission_-_That_Sinking_Feeling.lua	Mon Dec 10 07:59:45 2018 +0100
@@ -36,7 +36,6 @@
 	MinesNum = 0
 	MinesTime  = 3000
 	Explosives = 0
-	Delay = 10
 	Map = "Islands"
 	Theme = "City"
 	SuddenDeathTurns = 1