Nice game.
I like the game, but explaining the things I like about it would take too long and wouldn't be as useful as my other comments. The search and destroy level is really long and boring. There isn't any skill involved in getting to the enemies, and it is just annoying and takes forever because the tank is so slow. Also, one of the tanks can run over the walls. Also, the level with the big enemy tank is impossible until you realise you can destroy its weapons. I suggest you put a health bar over each weapon to make it clear that they are destructable. This is a good game, but it would be a great game if you could upgrade your tank. If you plan on making a second tank-o-rama, consider adding purchasable upgrades.