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

Promo Options:
NumPad4: Super Speed

Trainer Options:
NumPad1: Infinite Health
NumPad2: Change Studs By 5000
NumPad3: Studs Multiplier
NumPad4: Super Speed
NumPad5: Infinite Combo Time
NumPad6: One Hit Kills

Editor Options:
Misc: Current Studs
Modifier: Studs Multiplier

Notes:

Bricks: First collect some bricks. Press hotkey and collect some bricks again to see it has changed.

Bricks Multiplier: While active your gained bricks amount is multiplied by 4. You can change the amount by changing the editor item value.

Infinite Combo Time: While active your combo score will not disappear if you don't make a hit for a long time.