Thanks timg. It's not the final speed more of a test of what's possible. I would say and Dan can correct me, our aim is to have such speed only at certain moments when it needs it such as huge enemy fights, or matching music tempo, also might be used to transition from stages start and end.
The image attached shows the composite of real graphics in the game, that is 21 parallax splits each with 16 colours (336 colours for background). More importantly though is it will stay at 50fps.
Yesterday we needed to resolve a copper limit (in older videos you will see it but less so now).
Hopefully in the next week or so we will have all new assets in the game, explosions, enemies and some bullets are not yet updated.
We do have a facebook group also
https://www.facebook.com/bossmachineamiga/