The 100K ARC Damage Challenge in The First Descendant looks rough on paper, but it becomes much less demanding once you stop treating it like a boss-killing race. The counter rewards total Arc damage, not the number of enemies you finish, so the best approach is to hit as many targets as possible and keep the damage flowing. That same habit works well in other loot-driven games, where a smart route can bring in several rewards at once, such as ARC Raiders BluePrints alongside the main objective. For this challenge, you want crowded encounters, short gaps between fights, and a build that keeps working while you're moving.

Build Around Bunny's Movement

Bunny is the easiest Descendant to recommend here because her kit naturally fits the challenge. Her speed lets you pull enemies together, pass through groups, and keep dealing electric damage without stopping to line up every shot. You'll notice the difference almost immediately. A slower Descendant may hit harder in a single burst, but Bunny creates more damage events during the same amount of time.

When adjusting her setup, focus first on Skill Power, then add Skill Range and Cooldown Reduction. Range matters because it lets her electrical effects reach enemies before they spread out. Cooldown Reduction helps you avoid those awkward moments when you're sprinting through a mission with nothing active. Skill Duration is also useful, particularly when you're farming areas with repeated waves. Don't ignore survivability, though. A build that forces you to stop and revive every few minutes won't beat a slightly weaker setup that keeps moving. Energy recovery can help as well, especially during longer runs where constant ability use starts to drain your reserves.

Use Weapons That Keep the Counter Moving

Your weapon doesn't need to carry the entire build, but it should support Bunny's pace. Fast-firing guns are usually more useful than slow precision weapons because they create steady damage and help clear stragglers that survive your abilities. Look for weapons with reliable magazine size, quick reloads, and enough range to handle enemies that are just outside your electric effects.

Area damage is especially valuable when several enemies arrive together. Explosive shots, chain effects, and elemental triggers can all add extra hits without demanding much extra effort. You're not chasing the biggest number on one target. You're trying to produce a constant stream of smaller numbers across a crowd. If a weapon feels powerful but keeps leaving you stuck in reload animations, it may be slowing the challenge down. A comfortable weapon that lets you fire, move, and react quickly will often perform better over a full farming session.

Choose Density Over Difficulty

The best farming location isn't necessarily the one with the strongest enemies. It's the place where enemies appear quickly, stand close together, and don't force you to spend half the mission travelling. Weak mobs are fine if they arrive in groups. In fact, they're often better for this objective because you can damage several of them before the encounter ends.

Run a repeatable circuit instead of camping in one corner and waiting for a wave. Clear the first group, move toward the next spawn, and keep the route active. If the area has a natural loop, use it. Bunny is at her best when she's already moving between packs, not standing still in an empty room. Elite enemies can still be worth fighting when they appear along the route, but don't make them the centre of the farm unless they also bring a large group with them. Before starting, check your modules, reactor, and weapon enhancements. A small upgrade to skill damage or range can save several runs over time.

Final Thoughts

There's no need to turn the 100K ARC Damage Challenge into a long, exhausting grind. Pick Bunny, build around Skill Power and uptime, and bring a weapon that can handle groups without constant pauses. Then find a compact area with fast enemy waves and keep rotating through it. You'll gain challenge progress while collecting materials, experience, and gear for later upgrades. If you're also preparing for other extraction-focused progression systems, the same rule applies when you're looking to buy ARC Raiders Bps: spend less time chasing flashy targets and more time making each run produce something useful.