Warframe mastery rank.
Ok this is one of the most stupidest parts of warfare. no not the mastery rank system its self. the people that have mastery rank 15 and think mastery rank means anything. mastery rank means you leveled up many weapons, gear, played all the missions and used the junctions.
I have many days played my self and the only reason I don’t have mastery rank level 30 is because I'm to lazy to build stuff, and level it up. what I did was just go on the wiki and found a warframe, primary, secondary, and a melee I wanted. they all happened to be prime stuff so I went and got the keys (now relics) and had my friend help me out.
I got my self some nice stuff Nyx prime, Boltor Prime, Hikou Prime. because I got that stuff I farmed for more items and now my set up is Nekros Prime, Boltor Prime, Hikou Prime, Nikana Prime, and carrier prime.
I was only mastery rank 6 when I got the set. the only thing mastery rank is needed at is rank 8 when you have access to all relays. I am now rank 8 to get to all relays. I also deal the most damage in 2/3 games I play.