Hi sitebender!
By pixel-aligned I mean that a few things, like particles, seems moving by subpixels (very smooth) and not respecting the 160x144 pixel matrix.
To improve the gameplay, I would:
- rework the jump feeling
- make sure there is no camera follow when jumping (on some platform this happens and it is quite disturbing)
- let the projectiles interact with enemies even when they are clipped out of the screen
- make the guns orientable to shoot higher or lower and not just horizontal
Those are the (personal opinion)-advices that came from the top of my head ;-)
Keep up the great work!