[1] Launch our trainer.
[2] Launch Game.
[3] During the game press:
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NUMPAD1 – UNLIMITED HEALTH
Overlord 2: Trainer (+4) [1.0] Free Download
NUMPAD2 – UNLIMITED MANA / POWER
NUMPAD3 – AVANCED MINIONS TOWERS
NUMPAD4 – UNLIMITED HEALT FOR MINIONS