You might want to pick up a jetpack. There's not that much else to buy, anyhow. Stop off in the south subway to find the transporter guidance device. It's worse than getting killed normally because you may lose money. This is a surprisingly effective strategy at any point when robots are behind energy fields.
Robots have to recharge a lot, and they die out.
Just walk past them then. I'll tell you what this means later. Fixing it costs 550. To raise the money, just waste a bunch of border guards if you don't have any better plans. Probably the ones to the west should be avoided, as level two robots may come from the correctional center on the alert.