It's cool, but it needs a few tweaks.
It's a cool game, cool music, nicely put together. I can't ttelll if it's a Survival/Defence game or an Accuracy/Shooter game. It has elements of both, and the conflict with each other. Either way, it needs a few things.
1. Make the secondary weapon closer together. I can shoot and have the shots got on either side of an enemy. As the game monitors accuracy, this needs to be changed.
2. Gun heat? Ammo? Whatever makes the guns go red and stop shooting needs to be changed. Make the gun heat/reload upgradable or take it out altogether. If it's a Defence game, then I need to shoot faster than that. I'd shoot my big gun and miss, or I'd have 2 ships to shoot at. But I cant shoot again right away. As for the small guns, they go red just over what it takes to destroy one small boat. If there's two boats, or if you miss, you're red and stuck as he crashes into you. Plus, the side gauge doesn't go back up when you're not shooting. If it's an ammo gauge, it could be going up when not firing.
3. Give us full range. Don't put a range on the guns. It's too short by any means. I want to shoot that boat that just came into the screen.
4. HELP! Repair and Upgrades needs help. Make the repair available in increments. If I don't have enough money to repair ALL the damage, I can't get ANY repair at all. I chose to upgrade my turret HP on the first few levels instead of repairing damage. Now, I have 4000 HP, 3000 damage, 2000 money, and I can't do a thing! If I could buy 100, 250, 500 points of health at a time, I could be repaired over several levels, if necessary. Right now, I'm stuck.
5. And could you take out the 'Turret Upgraded' windows? I upgrade my gun several times per session, and they get annoying when you have to click OK 9 times per shopping trip. I can see my turret HP go up, so I know it's done. A window isn't needed.