I thought the turret would automatically target enemies. Boy was I wrong. There is only 4 weapons, not 'much more'... Pistol, Uzi, Launcher, and airstrike. Not counting the barrels you stated 'much more' before the upgrading bit.
An alright duplication of a formula, but it has some problems:
Enemies which fire unblockable projectiles fire too early for the game to be about skill. Before a specific upgrade level, certain combinations of enemies simply cannot be destroyed fast enough to avoid being damaged. This is not a fun way to die, and makes the grind of the game more obvious.
The difference between the pistol and uzi doesn't appear to be very significant.
You can get a health powerup when you are dying, which causes the level not to end, but with the truck absent and no ability to fire back.
Uzi appears to start with the ammo powerup, but you lose it after a round and need to rebuy it.
It's not my type of game but I did enjoy playing it.
The sprites are good and the music ain't bad either.
It was ok i didn't really love it, but then it wasn't bad either i give this a 3/5