It's done! Made in under 72 hours for Ludum Dare (ldjam 36). The theme was Ancient Technology, so I went with Steampunk-ish setting.
The game isn't well optimized for flash as it was intended to run on a window exe format, so please excuse some bugs and slowdown here and there.
CONTROLS!: READ THIS!
(You can edit the controls in the options menu to some alternatives)
\: Change Weapon
Space: Dash (you can also dash by pressing down and fire) (Dashing makes you invincible Dash through enemies, bosses and bullets!)
You can change the controls to different types in the options menu.