Fun game! I like the graphics, they remind me of the old Contra games. I noticed a few issues though:
When poisoned tanks are shot they lose their green glow even though they're still poisoned. Also, when poisoned tanks die, they just disappear. They should blow up or something.
In fact, poison needs to be nerfed because it's way too strong. I can beat most levels just by sticking a poison gun at the beginning. And it lasts forever, you could have an upgradable duration just like freeze.
Like the others are saying, fuel shouldn't be used or used a lot less when flying. I didn't know how to re-fuel. I landed a few times but nothing.
Other than that, it's a really fun game.
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