Is it possible to add new enemies/sprites into the game or for editor use?

Thanks.

(For example I've made this sprite: Sprite I've Made, will it work?)

I tried for a while to add a weapon in the game, but I don't think it's possible, unless you have the Construct 2 Files for the game. You can put that Sprite over the textures of other sprites, though. Keep in mind that it won't be a new entity, it's going to be more like a skin