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Half-Life: Opposing Force Hints
Larvae (Hagworms, Leeches)
Larvae are small little worms that swim around underwater. You usually don't meet many in OpForce. They are very easy to kill. One swipe from the knife or the pipe wrench will put an end to their existence. Larvae will swarm on and eat away at their victim. They do not do much harm even in large swarms. Just be sure to deal with them before they do any real damage to your health and PCV battery power.
