i jus got a shotgun and a fort and every time a wave came i slept and then ran and repaired the balloon
that was really fun
but it was way too easy. I didnt even try for the last medal, and all you really have to do is hide in a shelter.
the balloon should be harder to fill up, so as to encourage longer gameplay (and make that last medal harder).
also, i wanted to point out a glitch; if you set the quality to low and the timeline to 3X speed, the timeline becomes empty. this gets fixed in a few minutes, but it can be strange not knwing what's coming up.
this was a great game and very fun, but it was also a little on the easy side. After I got one shelter all I had to do was hide out until each wave passed, and if I didn't do that than I just bought an automatic weapon and never looked back. It's well made, but perhaps you could have more levels, or even sections where you have to fly the baloon itself.
we need more games like this on newgrounds