That was really challenging!
I found one of the easter eggs "Eye of the hurricane," but I still couldn't beat level 6.
That boss was kinda hard. I kept missing the powerups because I was trying to survive the whole time :x
I don't know if the 2nd easter egg would've made it easier but I couldn't find it :P
Overall, this game was really enjoyable. It's a promising start!
If you keep making more games, you will definitely improve. I hope you don't stop after this :3
Good luck! :o