Level Up Characters Fast in Injustice 2, the Best Easiest way to Level Up to 30 without being on PC

How to level up your characters fast in Injustice 2 without playing or being on your PC (for most of the time)? Level 30 fast in about 6 hours per character! I'll show you how in this video.
What you'll find in this video:
- how to fast Level up in Injustice 2
- fastest way to level up Injustice 2 characters
- how to level up Injustice 2 characters fast
- fastest way to level up to 30
- how to afk level up in Injustice 2 (level up without playing or being on your PC, for most of the time)
- how to level up fast your account in Injustice 2
- how to level up a character fast in Injustice 2
- best way to level up in Injustice 2
- best way to level up characters in Injustice 2
- easiest way to level up characters in injustice 2