User blog:Vasya124567/Ranking the boss system

There are different types of counters that boss can attack, and here is the list: 16 types of the total.
 * 1) Bullet Spammers
 * 2) Long-range tanks
 * 3) Machine guns, or bullet spammers with some spread
 * 4) Redistributors
 * 5) Destroyer branch
 * 6) Auto-N branch
 * 7) Flails
 * 8) Minion tanks
 * 9) Drone tanks
 * 10) Splitter
 * 11) Trappers
 * 12) Engineers
 * 13) Mobile tanks and eagle branch
 * 14) Multiple players
 * 15) Multiple player teams
 * 16) Rebounders

0 types vulnerable: S rank

1-2 types vulnerable: A rank

3-5 types vulnerable: B rank

6-8 types vulnerable: C rank

9-10 types vulnerable: D rank

11-14 types vulnerable: E rank

15-16 types vulnerable: F rank