DAN
CALLAN

Instead of treating each placement as an isolated script, I defined reusable encounter prefabs. Each described a complete fight: squad composition, spawning, combat geometry, and a decision ladder for how squads occupied it. A placement added local context—where and when it could appear, its probability and priority, and whether it should yield to higher-priority content. Engineering built the tools and engine-level controller; I built, placed, and tuned the prefabs.

At the start of a session, the active zone created its controller. It tracked combatants and encounter types alongside priority, difficulty, location, and elapsed time, then told prefabs to start, stop, respawn, withdraw, or be replaced. Hard limits prevented overages, exclusions preserved room for required activities, and session time enabled harder combinations. Every AI spawn eventually passed through it.

Lockdown used that foundation for a complete activity. Once its time window opened, a security ship sealed a point of interest behind a damaging field. Players used a protective consumable to enter, disabled the field, inserted a portable drive into a locked reward cache, and defended it through three enemy waves while rival crews could intervene. Completion guaranteed loot and returned the drive for another, more dangerous site. At launch, the event had a 30% chance to appear. Up to three sites could chain across a run, increasing the risk and possible reward. Because it ran through the controller, it could claim the combatant budget it needed without pushing the rest of the zone over its limit.

The result was not procedural combat; every fight remained authored. What changed was when and where those fights appeared, and which encounters could coexist. Zones could feel different between sessions without overrunning performance or starving required content. Shared labels also let us rebalance groups of encounters between seasons or disable a problem through JSON rather than ship a patch. The controller eventually became the required path for every AI spawn in the game.

World artists established the spaces. I refined them for combat through cover, landmarks, encounter placement, and flow, then used ambient fights, rare targets, quests, and secrets to draw players from the main route. Calendar variants moved some of that activity, giving return visits a different path.

Blind Well was the repeatable combat anchor. Players chose a tier and defended safe zones while damaging mist covered the rest of the arena. Defeating a marked enemy gave one player temporary protection from the mist. That player could leave the safe zone and remove a priority target’s immunity shield, opening it to the whole group. Each phase followed that rhythm: hold ground, find the marked enemy, then push outward against the exposed target. Higher tiers changed enemy strength and composition. The enemy group and final boss rotated weekly; the highest tier could lead to a bonus encounter.

I took Blind Well from initial design through shipping. I wrote its activity and encounter logic, paced the enemy waves, scaled the difficulty tiers, and built its rotating bosses and bonus objectives. I connected those systems to the UI and spectacle triggers, then tuned and debugged the activity. Weekly variants had to fit beside the rest of the shared destination within tight memory limits, so I worked with engineering on a loading solution that kept inactive combatant resources out of memory.

The same premise led to Ascendant Challenges: six activities whose entrances appeared one at a time on the weekly cycle. A consumable revealed the current portal, leading to an isolated combat, traversal, or puzzle space assembled from existing geometry. I originated the format, calendar structure, and production approach, then led three designers who implemented the challenges. I approved their concepts, joined reviews and playtests, and presented feedback.

The calendar tied these layers together. Returning the next week could mean a different Blind Well fight, an encounter elsewhere in the public space, or a new hidden challenge to find. The player knew the place better, but had not exhausted it.