Sometimes, you are able to collect a weapon from an alien "without a scratch" on it, afterwards being able to use it in your unites without cost (when you have the technology to build it already, of course). The ways I know to collect alien weapons are the following:
- Kill an Alien while he is in your mind control.
- Stun an Alien and bring him with you.
But, what's the best way to collect (farm) those weapons? There are other ways, besides the two from above, to get weapons without cost?