4000 Sec Lifeline play online

A top-down shooting game.
You will control a mech and shoot the Zerg to save a girl.
You will pay attention to the following points:
1. You must survive 4000 seconds to pass the level.
2. If it fails, the game will restart, but the unlocked weapons will remain.
3. Use the headset to better locate the position of the monster.
4. Reasonable allocation of resources to unlock weapons can survive longer.
5. Mecha is not very easy to control, because, it is remote.