Download Latest version of Hills of Steel Mod APK(v8.7.2)

To upgrade your tanks, go to the garage. Select the tank you want to upgrade, then tap on the upgrade option. You will need in-game currency and parts which can be earned by playing levels.

Power-ups provide temporary boosts that can help you in battles. They include extra damage, defense, or special abilities. Collect them during gameplay to enhance your tank's capabilities.

Unlocking new tanks involves completing specific levels or achieving certain milestones. Some tanks may require you to collect enough in-game currency or parts to make them available in the garage.

To win battles effectively, focus on your positioning, utilize power-ups wisely, and upgrade your tanks regularly. Combining different tank abilities can also give you an edge over opponents.

To complete missions, check the mission list in the game. Focus on the objectives, such as defeating a specific number of enemies or completing a level within a time limit. Rewards vary but can include currency, upgrades, or new tanks.