The map is just impossible. I'm level 78, How the hell are we supposed to beat it if the AI has aimbot? All his shot lands directly on my tank, dealing 50-200 damage per hit. Make them have NO aimbot. Or at least just reduce their health.
You already created a thread complaining about the final boss. But I'll admit. The last boss was one of the big walls for me Even at level 98, he gives me trouble. The problem is either you need more tank upgrades, weapons, supplies, or you need to build up your skill to hit more consistently. Also, it may help if you haven't done so already, to look up the complete mission guide on Steam.