I only figured out how to make it with the first four notes, idk how to go back down, descending notes if that makes sense
Can't figure out how to make arpeggio
Connect to [% 4] a [sel 3] or [sel 2] and connect this to your up/down toggle.
Other improvements to your patch:
Learn [t b f] , you should use it in conjuction with your [2( and [/ 12] to define execution order towards [pow] .
You might have a look at [mtof] too and use it instead of your conversion.
If you don't want the envelope to retrigger by changing the numberboxes of attack and release, you can store them in an [f] for each and flush them with your [r metro] and [r attack]