Still working on version 0.3 ? lol
It might happen some day! But I'm more likely to just start over again.
I hear the Godot engine is great for 2D games!. And if I could suggest two things, it would be to make a native Linux version, and include some kind of "Mercenaries" mode where you fight waves of enemies, upgrade weapons, etc.
I like the idea of a Mercenaries mode!