Now when it comes to leveling then using different warframes, weapons and equipment is a must because the way how we level up mastery ranks is just by leveling up weapons to their maximum. however there are weapons of note that you should consider keeping. i will list out the weapons in their respective mastery ranks below
NOTE: If a weapon i mentioned has the name vaykor,Sancti,Rakta and Synoid then they are locked behind a syndicate, all weapons with prisma, mara and vandal is locked behind baro ki teer

Mastery rank 1

• Seer
• Lato
• MK-1 Kunai
• MK-1 Furis
• Karak
• Strum
• Braton



Mastery rank 2

• Boltor
• Boar
• kunai
• Furis
• Sonicor



Mastery rank 3

• Aklato
• Lex
• Tetra



Mastery rank 4

• Hek
• Prisma Tetra
• Aklex
• Despair



Mastery rank 5

• Grakata
• Kohm
• Ignis
• Atomos



Mastery rank 6

• Brakk
• Soma
• Miter



Mastery rank 7

• Baza
• Sobek
• Soma Prime (Vaulted as of now)
• Marelok
• Synoid Gammacor



Mastery rank 8

• Pandero
• Akstilleto
• Lenz
• Braton Prime

Mastery rank 9

Nagantaka

Ignis Wraith

Twin Rogga

Twin Grakata

Mara detron

Mastery rank 10

Corrinth

Arca Plasmor

Amprex

Akstilleto Prime (Vaulted)

Vaykor Marelok

Arca Sisco

Mastery rank 11

Prisma Twin Gremlins

Telos Akbolto

Boar Prime(Vaulted)

Prisma Grakata

Mastery rank 12

Vaykor hek

Sancti Tigris

Akvasto prime(Vaulted)

Pyrana

Mastery rank 13

Pyrana Prime

Akbolto Prime

Boltor Prime

Tigris Prime

Mastery rank 14

Tiberon Prime

Supra Vandal

Euphona Prime(vaulted)

Sicarus Prime(vaulted)

Mastery rank 15

AKlex Prime (Baro Relics)