Pretty nice arcade game! Love the way you get quickly surrounded and you need to dodge every enemies / projectiles nearby, it gives me a shooter feeling.
The art is so cute and there's a lot a special effects everywhere.
The autoaim when the spear is nearby is pretty cool too.
Perhaps you can improve and add more juicy like screenshake when the spear lands on ground + a little special effect to make a better impact.
Good job! ! :)