To Hong Lam Balloon Popper

Prioritize bug fixes for now, so the UI (graphical style) stays in the default style.

WASD to move slingshot
Hold Left Mouse Button on slingshot to load Ammo
Drag to adjust direction and increase fire range
Release Left Mouse to fire

Each level increase number Raven, increase Balloon swing speed.
Shoot the balloon will get extra playtime.
Shoot the Raven will make Raven disappear will ammo.
Balloon can move and self explode.
Click on slingshot to load an ammo.
Try to use slingshot shoot Balloon down before it explodes.

Difficulty Option for giving more extra playtime or better firerate.