The Combine **Grunt** is the first and most frequently encountered infantry unit in Half-Life: Alyx. Here's a brief summary of their characteristics.

1. Setting Characteristics
Inexperienced Augmentation: They are the lowest-ranked conscripts in the Combine army.
Appearance: They wear white protective suits and carry an orange liquid gas tank on their backs.

2. Combat Style
Weapon: They primarily use **SMGs (Submachine Guns)** with a high rate of fire.
Tactics: They tend to rely on overwhelming numbers or straightforward shooting rather than intelligent tactics.

3. Biggest Weakness (Exploitation)
Gas Tank Explosion: Precisely shooting the gas tank on their back will cause gas to leak, making them shoot up into the air before exploding with a 'boom!'

5. The protagonist is a resistance fighter (Civil Protection) fighting against the Combine.