Thank you very much.  The cloud in the main menu was using the particle system in unity and the invert shader I made that was used in the rest of the game.  the particles are just circles that grow then shrink based on their lifetime and were given a small velocity.  I was initially hoping that the cloud would traverse the menu with the keyboard without me doing anything, but I didn't have enough time available.

Thank you.  I didn't follow a tutorial, I only based my movement and collision scripts on a previous project.  I was able to dash in any direction including up left.  Your keyboard might not have anti-ghosting, which allows any number of keys to be pressed and recognized at once, and might have an issue with having the up arrow, left arrow, and either space or shift being pressed all at once.