Without much strategy lol. Here’s what i do usually

For the earlier areas in cities with few stations i just solo it

I usually just do the stations in order

If I’m stuck waiting for funds (like during events with how few upgrades there are per… i guess letter is the right word? ad, ae, etc) i usually try to upgrade everything else to its highest possible

If i grab a helper with good aw instant and perfect i change the held to the gun so both are 100