1. make sure you have 5 garage slots available
(if you have no soviet tanks in your garage already) (you will have your list of tanks and all the way to the right of your tanks you will have a empty slot saying how many slots you have available. if there is no free slots available it will say buy a garage slot for 300 (usually) gold (real money)
if you don't have enough slots you wan't to consider selling tanks until you get enough or buying new ones for real money. i would recommend selling your old tanks after you are done.
2. The fastest & cheapest way is to get the:
Tier 1:
MS-1: free (light tank)
Tier 2:
BT-2: 3500 silver (light tank)
T-26: 3700 silver (light tank)
AT-1: 3000 silver (Tank destroyer)
Tier 3:
SU-76, BT-7 or T-46: 35 500-38 500 silver
(you only need one of them)that should be a total of 5 soviet tanks.
DCM7734 pointed out that 10 games more or less depending on your results will be enough to get all the low tier tanks required.
after that your achievement should pop.
*note i do not take into account the prices for the upgrades to the tanks.
another option for 2.Or you could wait with this achievement and get it at the same time as:
*Note the T-150 is yet to be released. (No longer needed for the achievement)
*Update: the T-150 is no longer required for that achievement.
*Note, if they restore the achievement when the T-150 is released so you will have to get that one to please let me know so i can update the solution.
So you need the
Tier 5:
KV-1
Tier 6:
KV-1S
KV-2
T-150and 2 more tanks of your choice, it won't make any difference. But would take the tier 1: MS-1 since its free and any of the Soviet Tier 2 tanks.
But of course you could buy any combination of soviet tanks if you like. you only need 5 of any Soviet tanks in the garage at the same time. But the solution above states the easiest, fastest or best way of getting it.
any questions? ask below.