In Warframe , mods are how you unlock true potential. With the right mods, almost any weapon or Warframe can become a true contender and take you all around the solar system, defeating some of the game's most difficult cont Players unlock special skill trees that provide unique passives and skills to benefit the crew they are a part of. Multiple trees can be upgraded at the same time, but massive time investment means most will stick with one or two. Similar to the Focus System, players who stic...