there are less loadout slots than there are base warframes
It is possible to complete the challenges using any equipped weapon or Warframe ability, i.e. it does not need to be the weapon on which the Riven is currently ...
Referral Program
How to get more weapon and Warframe slots. We go over how to clean out your already full inventory and other ways of getting slots without spending your pla...
1 Forma Mirage Prime Build by ninjase - Total Malevolence Mirage | Dual Augment Max DPS Weapon Platform | Solo Steel Path - Overframe
Total Malevolence Mirage | Dual Augment Max DPS Weapon Platform | Solo Steel Path - 1 Forma Mirage Prime build by ninjase - Updated for Warframe 38.5
Can someone explain to me how weapon and frame slots work?
A: You probably don't have enough Warframe slots to hold your new Warframe.