Activating this trainer:
Press F1 at main menu.
Listen for 'Trainer Activated'.
Press desired hotkey. All hotkeys can be changed on the trainer.

Trainer Options:
NumPad1: Infinite Health
NumPad2: One Hit Kills
NumPad3: Infinite AP
NumPad4: Infinite MP
NumPad5: Change Gold By 500
NumPad6: Unlimited Items
NumPad7: Get All Consumables
NumPad8: EXP Multiplier
NumPad9: Super Speed
NumPad0: Slow Motion
NumPad/: Unlimited Bonds
NumPad*: No Encounter
NumPad-: Get All Materials
NumPad+: Get All Aspects
NumPad.: Get All Sigils
Page UP: Mega Combo

Editor Options:
Misc: Gold
Selected Character: EXP
Modifier: Unlimited Items / Get All Items
Modifier: EXP Multiplier

Notes:

Unlimited Items: While active open your inventory and browse through categories to make all items unlimited. DOES ONLY WORK FOR ITEMS WITH EFFECTIVE QUANTITY!

Get All Consumables / Sigils / Materials / Aspects: Same as 'Unlimited Items' but additionally it also gives you items you don't have. Be careful as this could or could not break future progress.

EXP Multiplier: While active your gained EXP is multiplied by 4 (default). You can change the amount by changing the value of the editor item.

Gold: Open your status screen where gold is shown first.