For power-ups maybe a laser gun, ray beam, the gun from portal to solve puzzles, a power-up to have a higher jump, power-ups to increase the amount of health you have, bombs, rocks, temporarily invisibility, different types of firing of your weapon like in contra, etc.
Have like an electric whiplash looking seemingly like a snake, NOT referencing anything individually. For a shield or an indoor defense, you can have like a cosmic cake surrounding you (Above you is a candle maintaining the general defense), and for a counter attack, make a dirigible sword; its sentimentality can rely on self explosion every time an enemy gets hit.
These three things can make this game fun and experiencing to play, so make sure to use them (If you want) and credit me for their creation in the weapon selection section
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