Spoilers ahead for the last of the seven campaign districts and its final boss.
Defeating Cyberpsycho opens Above the System. You continue as Cyberpunk, but the streets give way to rooftops connected by narrow crossings. Take note of where the next fight will happen and where you can retreat.
Crossing the rooftops
Groups of agents occupy ten sections along the route. There are 15 ordinary enemies in total. Some roofs are clear and others hold one, two or three agents. Those numbers describe their placement along the route.
Agents use different fighting styles and attack sequences. Two enemies with the same appearance can behave differently. Be especially attentive at close range: a heavy hit can knock you down and interrupt your next attack.
Pick a place to fight where you can see an exit. A narrow crossing gives you less room to manoeuvre around several enemies than an open roof. Running ahead without checking may bring another group into the fight. Look for free space before choosing a direction.
There are three supply points and resources near them. Before the final rooftop, check your health and cooldowns. Approaching the arena triggers the boss, and the way back closes after the fight starts. Defeating every agent is optional for reaching this encounter.
Fighting The Chosen
The Chosen combines melee attacks, gunfire, jumping attacks and copies. As he loses health, the fight grows more crowded. At certain thresholds he splits and adds opponents to the arena. After a successful attack on the original, check who has moved into range before attempting the next one.
Keep moving while watching the copies. Identify the closest threat first and clear enough space to move. Copies can draw your attention away from the original, but an enemy right beside you can be dangerous even when you're focused on the boss's health bar.
Cyberpunk still has Time shift. Use it to change position or deliver an attack, bearing in mind that a hit can still hurt you. With more targets in play, keep a clear route out.
Finishing the district
Victory awards 60 crystals and lets you buy The Chosen for the Arena for 600 crystals. Completing the campaign unlocks that purchase.
Above the System is the seventh and final district on the current map. You can return to earlier districts, invest in permanent upgrades or try the other modes. The tutorial on the map is a separate introduction. There's no hidden eighth district required after the finale.