how are players making credits in this game

Zapfhan:  One way to earn credits is obviously to buy and use a premium tank.  But besides that you still have other options.Taking part in Frontline if you have ~3 tier VIII tanks that you like to play and have a solid record with Tanks around tier VI and VII. On these tiers you usually have tanks that are fairly good but also cheap to maintain (repair cost, ammunition etc.) If you have one or two tanks that you really like and are comfortable playing, I'd say keep them and play them frequently to earn some credits.  Tier VI and VIII stronghold.   There in general certain types of players who use a lot of premium rounds.Guys who want to three mark these tanks and thus want to limit the times they couldn't deal damage Those who grind a certain tank and want to compensate for a stock gun On tanks that have double APCR they more or less do not have to trade off something.   Using them in a spammy nature isn't really profitable (with maybe some exceptions). Usually those guys who spam premium rounds rely on modes like FL or Stronghold in combination with premium account to earn credits back.