Half-Life 2 Enemies:
These combine solidiers are vicious enemies that will shoot Gordon on sight. They will do anything to kill Gordon.
Striders are tall and they pack a punch. They will rain bullets and plasma beems down at Gordon to try and kill him. Rockets, a lot of rockets are required to kill one of these poor inventions.
Fast and furious, these creatures will tear one limb from limb.
The mutated antlion is so huge that it will charge and kill anybody in one hit, except Gordon Freeman because he has his Hazardous suit on.
Zombies are slow moving and not so smart. One can leave these horrible creatures alone or kill them where they belong.
Believe it or not this is the creature that invades an individual and turns them into zombies. Avoid them at all costs.
The Combine Gunships fly around Earth and drops Combine Soldiers on the ground. They can also shoot bullets down at Gordon.
Nearly identical as the Combine Soldiers, but they are stronger and carry a more advance weapon.
Man Hacks are everywhere flying and hacking individuals until they die.