My feedback:
* retreat button react too slow, on a few occasion I wanted to attack certain camp by attacking another camp and let it intercept, and i failed to retreat the marshal eventhough I press retreat as soon as it won the first battle (then obviously the remaining troops went on and SPLASH!)
* weapon too expensive (iron bar), and you literally run at a lost from playing PvP, no incentive at all
* lag issue prevent the battle graphic from showing, sometimes well into a battle, preventing user from picking the appropriate troops type, resulting in unnecessary heavy lost
* receiving mail notification saying I have lost a Colony (with rewards??) when I have actually repelled an attacker
* the position where we can place the D is limited, and sometimes very obsolete (as you can completely by pass these D position)
that's all for now.