How to Level Up Fast in Aliens Fireteam Elite 2

Leveling up all your classes in Aliens: Fireteam Elite 2 will require you to complete most of the missions more than once. The XP gains are quite small at the standard difficulty level, and that's why using challenge cards is strongly recommended. However, despite a potential x3 XP gain from challenge cards, they provide such an upscaled difficulty that you might fail and waste your time, which is why we'll explain what you need to do to get XP quickly in Aliens: Fireteam Elite 2!