diff -r 6ff01dc1ffe2 -r 877f55c77a3f share/hedgewars/Data/Missions/Scenario/User_Mission_-_Dangerous_Ducklings.lua
--- a/share/hedgewars/Data/Missions/Scenario/User_Mission_-_Dangerous_Ducklings.lua	Wed Apr 26 22:31:29 2017 +0200
+++ b/share/hedgewars/Data/Missions/Scenario/User_Mission_-_Dangerous_Ducklings.lua	Wed Apr 26 23:05:05 2017 +0200
@@ -136,7 +136,7 @@
 		elseif (gear == instructor) and (GetY(gear) > WaterLine) then
 			HogSay(player, loc("See ya!"), SAY_THINK)
 			TurnTimeLeft = 3000
-			AddCaption(loc("Achievement Unlocked") .. ": " .. loc("Naughty Ninja"),0xffba00ff,capgrpMessage2)
+			AddCaption(string.format(loc("Achievement gotten: %s"), loc("Naughty Ninja")) ,0xffba00ff,capgrpMessage2)
 			DismissTeam(loc("Blue Team"))
 			gameWon = true
 		elseif gear == enemy then