Please note that these are averages taken from the wiki and the tiers often change based on planet and mission. A level 23 - 26 mission might be tier 2 on that planet, and tier 1 on another planet.

Sometimes you might see people mention rotations. Rotations refers to how much time has passed, or what wave you are on in the mission. In a survival mission, a rotation would "rotate" every time you get a reward (which is every 5 minutes). In a defense mission, a rotation would "rotate" every 5 waves. The rotations go in the order 'AABC', after C it loops back to A.

Here are some tables that covers different types of missions for easy access:

Thanks for reading! These facts were taken from various sources on the wiki, the subreddit, and the official forums. If I got something wrong or you have any feedback on the guide please comment. I want this guide to be as accurate as possible. Due to my lack of interest in the game, I will likely not be updating this unless I happen to come back to the game, so if an update changes things, please note that this guide will likely be outdated.

If you liked it and/or this guide helped please rate up and favorite!