Start the game, then the trainer. Press the keys indicated in the trainer.
A few nuances of use: functions $ 10,000,000 and Infinite fuel do not change immediately after switching on.
Mercenaries 2: World in Flames: Trainer (+9) [1.1] {Ded_Mazay1991} Free Download
You need to try to change their values, for example, try to shoot down a bystander and call a helicopter.
Use the latter function at your own risk. Have a good game.