Functionality is a key part. The trainer likely offers various cheat features. Common features in such trainers include infinite health, infinite ammo, fast health regeneration, money or resource duplication, ability to skip missions, maybe even god mode. I should list these features, but I need to be careful not to list too many if unsure. Also, some trainers allow users to tweak different game parameters, like enemy weaknesses or mission objectives. But since I don't have specific info on this trainer's features, I'll generalize based on common trainer functionalities.