diff -r f3c1679694d3 -r 72be38f6d0c0 share/hedgewars/Data/Missions/Campaign/A_Space_Adventure/cosmos.lua
--- a/share/hedgewars/Data/Missions/Campaign/A_Space_Adventure/cosmos.lua	Sun Nov 20 03:43:27 2016 +0100
+++ b/share/hedgewars/Data/Missions/Campaign/A_Space_Adventure/cosmos.lua	Sun Nov 20 04:08:21 2016 +0100
@@ -606,6 +606,9 @@
 	SendStat(siCustomAchievement, loc("You can choose another planet by replaying this mission."))
 	SendStat(siCustomAchievement, loc("Planets with completed main missions will be marked with a flower."))
 	SendStat(siCustomAchievement, loc("Planets with all missions completed will be marked with two flowers."))
+	if GetCampaignVar("Won") == "true" and GetCampaignVar("Mission1Won") ~= "true" then
+		SendStat(siCustomAchievement, loc("Complete all main and side missions to complete the spacetrip mission."))
+	end
 	SendStat(siPlayerKills,'1',teamC.name)
 	EndGame()
 end