How to level up garbage weapons/companion solo

Simple answer do spy missions and the easiest one with best amount of affinity is kuva spy (pago) that's only for a solo player if you have a good network "unlike me" just go for any defense mission you can max out any weapon in 10 minutes 'if the squad is full' (and you have to stay close to them cuz you get nothing if they are far from you) Anyway sorry for the garbage video 😅 but i hope it helped you somehow warframe how to level up weapons fast, warframe how to level up fast, warframe how to level up mastery fast, warframe how to level up fast for beginners