Missions:these are RPG missions that are done with stats
unofficial missions: these missions you RP to win
D-rank mission:no fighting easy missions
C-rank mission:no fighting little harder missions still easy
B-rank mission:fighting missions but easy fight but still harder
A-rank mission:fighting mission hard mission to complete and advanced fighting
S-class mission:super hard mission only 10% you'll pass but lots of fighting involved
very easy mission:easy mostly happy RP
easy mission:harder but only a little harder
medium mission:medium mission like it says harder to RP
hard mission:hard mission 30% that you'll pass pro RP expected
very hard mission:very hard RP mission 10% you will pass