It was good, but it didn't seem like the speed increased enough. Also you might want to implement some type of regeneration of health, maybe a set amount at the beginning of each wave or you can purchase it before instead of an upgrade.
Reviews for "WW2 Last Defense"
Very good
Hm i would love to play more of this
It's not too bad. For a simplistic game it's kinda fun, and you actually threw in upgrades only making it better. I just think there's more that could be added, but this doesn't seem like something to blam.
This game is not bad, but I'm not saying that its the best.