And here comes Triple Kill! ezpz
Multikill3! LINK
Game successfully stores incoming messages so you won't miss any.
You could add sounds, pictures and anything else you like.
Left button - Shoot
Middle button - Kill 'em All (There's 8 enemies so you will have few more Pentakills which you may easily fix, but I required more messages here)
Right button - Spawn "HELLO" Message
Current limitation is 98 messages, you can surely spawn more. However I doubt ANY game uses more than 3-4 in the same time.
I don't even need this in my project right now, but it's nice to have for future use