Mastery Rank 15 test is trolling me.

[mmchaos989898]

i hateb ranki up i try 13 rank up test 3 day i missi so hate rank up

i waste my time rank up is the most unusles part the game for me and i ask question how i can do 13 rank up.

to warframe forum and not help just talk and no tip example which weapon and frame combo good thios rank up.