The 100K ARC Damage Challenge in The First Descendant looks worse on paper than it feels in a real run. The counter is not asking you to land one huge hit or defeat a special boss. It simply wants total Arc damage, so every tick, chain effect, and electric burst matters. Once you stop treating it like a normal kill quest, the best approach becomes much clearer. You want crowded rooms, quick respawns, and a build that keeps dealing damage while you move. That same "get more from every run" mindset also works well when farming ARC Raiders BluePrints, where route choice and steady resource gains can save a lot of time.

Build Around Bunny's Movement

Bunny is still the easiest choice for this challenge because her damage comes naturally from movement. You do not need to stand still and line up every shot. Run through a pack, let her electric abilities pulse, then circle back as the next group arrives. It feels simple, but that constant damage adds up quickly. Focus your modules on Skill Power, Skill Range, Skill Duration, and Cooldown Reduction. Energy recovery also deserves attention, especially if you are farming for several minutes without returning to a station. A little extra survivability is useful too. There is no point in chasing damage numbers if a stray hit keeps forcing you to stop and recover. Bunny works best when she stays in motion, and the build should support that playstyle rather than turn her into a slower caster.

Choose Weapons That Keep the Counter Moving

Your weapon does not have to carry the entire run, but it should help maintain pressure between ability cycles. Fast-firing assault rifles, submachine guns, and other weapons with reliable elemental effects are usually more useful here than slow precision guns. A weapon that hits several targets or applies damage over time can produce more progress than one that delivers a bigger number to a single enemy. Magazine size matters as well. Frequent reloads break your rhythm, and those small pauses become surprisingly costly over a long session. Look for decent fire rate, manageable recoil, quick reload speed, and some form of area coverage. Electric bonuses are welcome, but do not ignore a weapon that performs well against groups just because its element is not perfect. The challenge rewards repeated damage events, not a pretty damage-per-shot statistic.

Farm Crowded Areas, Not Tough Targets

The best location is usually the one where enemies arrive in clusters and the next wave is only a short sprint away. Weak enemies are often better than elites for this job. They may die faster, but you can hit many more of them in the same amount of time. Run a compact loop instead of camping in one corner. Clear the first group, move towards the next spawn point, and keep the route active. If the area goes quiet, do not stand around waiting. Either rotate to another nearby group or reset the activity if the mission allows it. You will quickly notice that travel time is the real enemy. A route with slightly lower enemy health but constant action can beat a supposedly high-level farming spot with long gaps between encounters. Bring enough ammunition, learn the spawn pattern, and treat the run like a short circuit rather than a single fight.

Make Each Run Count

There are a few easy ways to speed things up without changing the whole build. Activate any useful boosts before you begin, particularly if the same session can provide weapon proficiency, experience, and crafting materials. Keep your Reactor and modules upgraded when you can, since even a modest Skill Power increase becomes noticeable across hundreds of hits. Avoid getting distracted by bosses unless one is already part of your route or another objective. Bosses can be fun, but they normally offer fewer damage instances per minute than a dense group of regular enemies. Check your inventory between runs, too. Keep parts that fit future Descendant or weapon setups before dismantling the rest. A tidy inventory makes it easier to spot worthwhile upgrades and prevents a productive farming session from turning into a long sorting job.

Final Thoughts

The challenge becomes much less demanding once you build for uptime instead of burst damage. Bunny gives you the mobility and constant electric pressure needed to keep the counter climbing, while a rapid weapon covers the gaps between skills. Pick a dense farming route, move as soon as an area is cleared, and avoid wasting time on targets that slow the run down. You will also collect gear and materials along the way, and those extra drops can support later upgrades or be traded toward useful ARC Raiders Materials for sale when you are planning future sessions. Play aggressively, keep the route flowing, and the 100,000 damage mark should arrive far sooner than it first seemed.