This was like taking the circle against an unknown weapon.

The safest thing to do would be to focus fire on the unknown weapon, but if he did, they wouldn't know its capabilities.

Half a dozen children turned, well understanding the threat of an unknown weapon.

He is killed by plastique explosive, an unknown weapon at the time the curse was made.

He just caught a trace of the first shockwaves from their unknown weapons but the counter-attack came too late.

The shot from an unknown weapon had come from the Re-9.

Jalte's defenses were strong, but they had not withstood that unknown weapon even for seconds.

Claudrin reported their use of an unknown weapon which had almost destroyed an interceptor.

It had taken a "weapon" unknown since the time of the great War!

But most potent of all was a weapon unknown to Triplanetary warfare.