2021.3.17 The Updated content:

1. Added a new guide mission.
  2. Solved the problem of control companions and missile launch lag.
  3. Added the frequency of cannon attack of the main battle tank controlled by the player in order to prevent the experience from being affected by the lack of energy of the weapon and the player not firing bullets, which also weakened the difficulty of the game in disguise (there are five difficulty levels in the game, if you think the difficulty is too easy, you can adjust it at any time in the settings of the game screen).