Completing Missions

After you complete any mission, a screen similar to the one above will pop up. Most missions give you prestige, which is basically like XP in other RPG games. Also, many missions reward you with new armor or weapons, which are found under the REWARDS word, which should look similar to the screenshot above. You should take a longer look at the rewards that you earned, because this is the only notification that you received the weapons and armor. When I started playing, I always thought that weapons would just suddenly pop into my arsenal until I found out they were all quest rewards and I simply missed this notification. As you complete harder missions, the rewards and prestige that you earn become better and better.