Nice job Tbh one of my initial ideas for Delay was delayed input, but that's a tricky thing to get right in just 3 hours.
The delay of input is too big and it seems like you need to hold the button before the movement will be made, so when you just press right key nothing happens. or when you press space once. That might be more interesting, because then you need to plan your action.
Here, you just need to hold it for a bit longer to move/jump. But anyway, 3 hours is not too much to get things always done right