Ranking Up To Rank 5

[pikodash]

Hi ! I can't rank up from 4 to 5 atm. No matter how many missions I've gone through. I've owned two kubrows and all my warframes and weapons are all in the rank 30. But i still have no idea why I can't rank up from 4 to 5. Help needed please ! thanks

[Rydian]

You need to master more of the game's content in order for your mastery level to ride.

 

Get new weapons and rank those up if you need more EXP, 'cause those are by far the easiest things to get.

[pikodash]

Alright. I played most of them but some are still locked. How do I unlock the missions?

[Rydian]

Alright. I played most of them but some are still locked. How do I unlock the missions?

Beat the glowing missions and it'll make new missions up up next to them if they exist.  Generally when you hit an assassinate mission, it'll get you to the next planet, and later planets have more missions.

[pikodash]

Beat the glowing missions and it'll make new missions up up next to them if they exist.  Generally when you hit an assassinate mission, it'll get you to the next planet, and later planets have more missions.

Alright ! Thanks a lot bud ! :)

[Grobbus]

I got to about rank 5 by leveling 4 weapons and unlocking all planets. 
Ask a taxi to every planet boss so you get them unlocked (like I did ), I can even taxi you to some ;p hit me up if you need help.