Due to the fact that anyone can join a map, it is possible to create multiple accounts or work together with others and farm them for kills. There are also cheating methods that can be done manually.
There are multiple ways of doing this obviously: On one had one is able to use so called hacks, DLL injected programs that will add functionality to the game, such as ESP hacks that let you see things you shouldn’t be able to see or aimbots that do all the aiming for you and grant you easy kills, easy credits, experience and gold. Cheating in Heroes & Generals is essentially to use any kind of tool or method that is not part of the official game, it’s rules and toolkit in order to get more credits, gold and levels faster than it would be possible within the above mentioned confinements.