Very unique idea on controls, unfortunately I ended up playing with two phones myself and that extremely difficult.
I think you would have made a sharing the keyboard an option you would get more people playing (don't think many people will go to the effort of logging in with two phones)
Once the game loaded it seemed like it would have potential, the graphics were engaging and it was fun to use the double trend system to move the tank, shooting was more challenging and the hit box on the bullets seemed a little off.
Hopefully I can give this one another try with my kids later this week.
Thanks for submitting