You have homework, it needs to be done so please do it. Remix the project to do said homework
Your homework is to create a semi auto or fully auto gun in my style of creation, I will give you my asset sprite to use as a reference, the reason you are doing this is to allow you to learn how to adapt to an enemy, also the best one will get a good grade and a bonus to the first test. (also I might use your entry in my thing, you will get credit)