Delete the 1.12 patch and use patchblocker. When done the patchblocker good it will not ask you to update!
Then do find game and select free for all
5 of 10 times you join a modded lobby like super jump,speed, unlimited ammo lobbys but often it sol be a Challange Lobby
get to level 48 and you unlock the ACR
Level 48
Go up levels
Uh....no
when you are level 4 you unlock the intervention and 50 cal.
yes there is but it does not unlock everything for you just the level and all guns.
get to level 48 and you unlock the ACR
no
Level 48
get 2500 headshots
level 4
Unlock all attachments.
Go up levels
lvl 34
Uh....no
level 70
You can not the game does not have it