I just released new update on the Google Play Store with few changes and addons. All battlefields are now open via Random Battle button. So you can fight in desert, village etc. from begining.Now you can continue with 1 hitpoint after lose battle too. Just tap on the Continue button, you will see one AD and you can try your luck yet. Next change is that you can open the Rare crates in the battle directly. You can do it after one AD or you can hire the Sapper in the game market and you can open the crates for free (in the battle and in menu too). Hope the changes are good for players so let's go and try destroy some next armored vehicles... ;)
Pavel, Old Oak Den