The phrase full armor of God comes from Ephesians 6:13-17: Therefore put on the full armor of God, so that when the day of evil comes, you may be able to stand your ground, and after you have done everything, to stand. Stand firm then, with the belt of truth buckled around your waist, with the breastplate of righteousness in place, and with your feet fitted with the readiness that comes from the gospel of peace. In addition to all this, take up the shield of faith, with which you can extinguish all the flaming arrows of the evil one. Take the helmet of salvation and the sword of the Spirit, which is the word of God.

Ephesians 6:12 clearly indicates that the conflict with Satan is spiritual, and therefore no tangible weapons can be effectively employed against him and his minions. We are not given a list of specific tactics Satan will use. However, the passage is quite clear that when we follow all the instructions faithfully, we will be able to stand, and we will have victory regardless of Satans strategy. (less info)