Big improvements since previous DD. Dunno about "relative mouse mode", feels like it would suit a controller better. As usual - hat mechanic is great, kudos for new weapons (tri-gun sucks btw).
I like the style, I like music. It choked a bit on a large monitor, but oh well. Also - train boss is a pretty big difficulty spike. Still manageable, but I wish you'd get an indication that you're actually hurting it - it took me a bit of time to realize that the goal is to take out the turrets.
Good stuff, please keep it up!