If you look at the items in a shop, scroll over one, then press the spacebar while scrolled over it, it will bring you back to the shop menu, but it will show that you have 10000000 coins. It's just a visual though. You don't actually get those coins. It goes back to normal when you leave the menu.
To those looking for the meaning behind the unused items, I may have found the comment.
Posted by Imtellinellen: "To answer a couple questions. 1. The lucky piece of coal is a reference to the game Broken Sword 2. It doesn't actually do anything. 2. The Statue is named stephano and is a reference to pewdiepie's play through of Amnesia the dark descent on YouTube, it also doesn't do anything. 3. Haven't figured out the scale yet... I do suggest you guys check out both of those games as they are quite good."
If you use the Chimera Bear while an ally is fallen, they will be pulled off-screen like they are supposed to. When you try to revive them immediately after that (using a coffee for example), the target icon for them will be placed in the upper left corner. Pressing it freezes the player in the action of giving them the item. D:
If Matt uses his Battle Metal when an ally is fallen, the fallen ally will stand up. However, they will still be considered fallen, as it skips their attack turn until you use an item/skill to revive them.
Having E the button to shoot is kind of a bad placement if we can only move with WASD. It's all clumped together. Maybe you could make L or P the shoot button, or make it so that the arrow keys could also be a function for moving. :)