Thanks a lot for the feedback, I had a few things in mind I'd like to change for the next game but you've come up with some points I never thought about. I guess sending the player back to the start after using a continue was a bit too harsh, but I thought it made the game feel more arcade-like. Never mind; I'll scrap that for sure. You're also the second one to mention the character moving too slowly and hardly needing to use LShift.
I did realise whilst making the game that the bullet patterns were extremely basic and I learned about that aimed attack trick well after I finished making the game. Whoops!
I can promise more bullets and more varied boss bullet patterns for the next one.
Thanks for playing!