Most trainers use the numeric keypad (Numpad):
Trainers are intended for Single Player matches and Campaigns. Attempting to use them in Multiplayer will likely cause a "Desync" error or result in a ban from Steam services. age of empire 2 hd edition trainer
Unlike trainers, these are built into the game. To use them, press during gameplay, type the code, and press Enter again. Note that using these will disable achievements for that session. Age of Empires II HD Cheats and Trainer for Steam Most trainers use the numeric keypad (Numpad): Trainers