Hi, i like your game alot,I would like to add some ideas to your game if your out of brain juice
1:Juicyverse (A Hub Which You Can Go By Going About 1-10k Meters Up The Sky) Where You Can Battle New Enemies And More Upgrades, Which Sounds Like A New Area.
2: Shops (Maybe Seen At Juice Portals Or Fountains.) It Is Where You Exchange Juice For Wepons, Heck Add Even Enchantments!
3:Armor,Cosmetics,Sfx (The Game Still Is Very Bland, Maybe Try Adding Armor So That The Harder Stages Are Easier, Or Cosmetics To Make Your Player Look Swag, Or New Sound Effects)
4:Bosses (Any Ideas For Bosses? I Cant Think Of One..)