Written down
Do
Level 1:
- Mosin Infantry with 7.62x54R LPS Ghz
- SKS with 7.62×39 PS
- PP-19 Vityaz with 9×19 PST Gzh for Labs/CQB
- P226R with 9×19 PST Gzh
- AKS-75U – comes full with BP ammo, buy Tracer
AK-74N – trade for Blackrocks that you buy from Ragman
Helmet: SSh-68 (the best helmet in the game)
Level 15 (that's when you start unlocking the good shit):
- Mosin Sniper
- OP SKS
- Vepr Hunter with M80 (Stockpile them!)
- 5.45 only with BT or BP
- MP-153
- MP-443 Grach (best pistol in the game)
- Armor: 6B23-1 (up until Gen4)
Level 18:
- Start using 5.56 only when you have M856A1
- 6.3 AP
Level 22:
- SVD (use with best armor)
- Use 5.45 BP with AK-74N
- From now use 7N1 ammo for mosin only
Level 28:
- AKs are better now because you have attachments
Level 30:
- Glock 18C with PST Ghz
- Gen4
- ZSh-1-2M with face shield
Level 33:
- AS VAL
- 5.45 BS hell yeah!
- 60 Round mags
Source: https://www.reddit.com/r/EscapefromTarkov/comments/dd5fxf/pestilys_leveling_guide_as_text/