Once Human: Best Places To Farm Acid

Key Takeaways

• Players need lots of Acid to craft Tier 3 Aluminum in Once Human, obtainable from Stardust-corrupted enemies, especially Jellyfish.
• Several Acid farming locations in the game offer various yields per run, with tips on routes, enemies, and defense events.
• The updated map in Way of Winter adds new Acid farming spots; players can find Acid in familiar zones like Monolith of Greed and Sutherland Chemical Plant.

Once Human players will need lots of Acid to craft various recipes in the game, including the Tier 3 Aluminum. This precious resource can be found by killing most Stardust-corrupted enemies in the game, especially the Jellyfish ones.

Here are eight different zones where Once Human players can get the best Acid farming in the game, with tips on the best routes to take, enemies, spawning rates, and also information on the defense events fans can trigger to get more Acid. To be safe, gamers should bring lots of ammo before venturing to these locations.

Updated October 22, 2024, by Lucas Simons: With the Way of Winter update, the map of Once Human has changed significantly. That doesn’t mean that players cannot play in Manibus anymore, since the game allows one to keep running in the old maps even during the new season, but it does mean that there are new spots to farm Acid in the game. As such, this article has been updated to feature new locations where players can find Acid in the Way of Winter map.

This article contains slight spoilers for The Way of Winter update.

8 Ancient Ship Farm – Vena Fjord (Way Of Winter)

Between 20 To 40 Units Per Run

• Avg. yield per kill: 2 units (Normal) 4 units (Elite)
• Best Route: Center> East> North > West – Repeat
• Avg. respawn time: 0:30 (Normal) 1:40 (Elites)
• Zone Level: 5+

Some things in Once Human have changed for good, especially the way players can access this precious resource. Most campsites are filled with Corrupted enemies, Fireflies, and Spiders that yield great quantities of Acid when killed in sequence. Yields per run have almost doubled, and this is reflected in the state of the game in general. For this Acid farming method, players should roam small campsites from Level 5+ in a square pattern from the center towards the east, then north and west, and back to center to start again (counterclockwise).

This is a good way to get the kills before most players who do it inversely (clockwise), since the game calculates spawn rates depending on the distance of the enemy from the spawn spot when it dies, so this will benefit farmers who do it inversely. Players can keep repeating this process to get between 20 to 40 (depending on luck) per run.

7 Wish Land East – Onyx Tundra (Way Of Winter)

Between 30 To 60 Units Per Run

• Avg. yield per kill:2 units (Normal) 4 units (Elite)
• Best Route: Center> East> North > West – Repeat
• Avg. respawn time: 0:35 (Normal) 1:55 (Elites)
• Zone Level: 16+

Wish Land East can be found in the Onyx Tundra area of Way of Winter, to the North East of the Great River Danger Zone. The map is filled with lvl 15-17 Deviated Enemies, so dealing with them can be annoying, especially since their spawn rates are shorter than usual.

For this farming method, players should start in the center of the point of interest and move forward to the parking. Then, they should go east up to the complex building, then north and, finally, west. Players can repeat this counterclockwise pattern, and they should remember the three Elite enemies present in the central areas between the buildings.

6 Dayton Hospital – Manibus

Between 20 To 30 Per Run

• Avg. yield per kill: 2 units (Normal) 4 units (Elite)
• Best Route: South> Center> East> North > West – Repeat
• Avg. respawn time: 1:55 (Normal) 3:55 (Elites)
• Zone Level: 7

Dayton Hospital can be found in the northeasten part of the Dayton Wetlands zone. To farm Acid in this zone, players should start by entering from the southern entrance. Then, they should go to the center, to the fountain area, and clear the eastern wing of the buildings. After this, players should go north along the parking lot, kill the Elite, and go west. Enter the hospital, then drop south, killing the nurses and the Elite in the first part of the hospital. Then, players can exit through the parking lot and go to the south entrance.

Repeating this route, players can acquire an average of 40 to 55 Acid units per run. That said, it’s important that PvP players approach this route with caution, as there are lots of buildings that are perfect spots for sniping.

5 Sutherland Chemical Plant – Manibus

Between 30 To 45 Per Run

• Avg. yield per kill: 2 units (Normal) 4 units (Elite)
• Best Route: South> Center> East> North > West – Repeat
• Avg. respawn time: 1:55 (Normal) 3:55 (Elites)
• Zone Level: 14

Sutherland Chemical Plant can be found in the center of the Broken Delta area. When players reach the southern entrance, they should start farming toward the center, kill the Elite in the eastern building, and keep following the pipes while killing the Jellyfish enemies. Then, they should go north, following the oil tanks, and enter the main building in the west. Kill the Furnace Elite, and then go down south through the west buildings.

If players manage to find the Sutherland Chemical Plant Access Card V1, they can activate the Refinery event in the main building. The event consists of defending the machine from three waves of enemies and Elites. Once fans complete the event, they’ll receive 50 to 75 Acid among other useful items.

4 Monolith Of Greed Danger Zone – Manibus

Between 30 To 50 Per Run

• Avg. yield per kill: 2 units (Normal) 4 units (Elite)
• Best Route: South> East> North > West – Repeat
• Avg. respawn time: 1:20 (Normal) 2:35 (Elites)
• Zone Level: 10

The Gaia Monolith Danger Zone can be found at the center of the Broken Delta area, on the highest peak. There are two entrances to the complex, north and south, but it’s recommended to take the south exit and go up until players reach the Monolith (Dungeon) area. Then, they can climb down the way they came.

Alongside the path, players might find several Elites, which drop in between 3 and 4 Acid units (and also Gunpowder). This is a good place to get other useful resources, but enemies can swarm players since respawn timers are lower in this zone. This is also a contested zone, so farmers will need to watch out for enemy players.

3 Hearst Industries – Manibus

Between 20 To 40 Per Run

• Avg. yield per kill: 2 units (Normal) 4 units (Elite)
• Best Route: Center> East> North > West – Repeat
• Avg. respawn time: 1:55 (Normal) 3:55 (Elites)
• Zone Level: 11

Hearst Industries can be found on the southeastern side of Broken Delta, near the limit with Dayton Wetlands. This zone can be complex to farm, so players should try to go to the central area near the oil refinery and move east following the pipes. Kill the elites along the path and then turn north toward the warehouses.

As players move through the buildings, they should check for another elite near the entrance of the main warehouse. Moving to the west and dropping towards the center will allow players to repeat the route.

2 Eastern Railway Junction – Manibus

Between 30 To 45 Per Run

• Avg. yield per kill: 3 units (Normal) 5 units (Elite)
• Best Route: South> Center> East – Repeat
• Avg. respawn time: 1:55 (Normal) 3:55 (Elites)
• Zone Level: 14

The Eastern Railway Junction can be found in the northernmost part of the Broken Delta area. Follow the train tracks near the south entrance until the central deposit area is reached. Kill all the Jellyfish, normal enemies, and the Elites, then turn east toward the warehouse. Players should watch out for the fog, as it will limit the field of vision and leave them vulnerable to ambushes.

Once players are done clearing the enemies, they should run toward the east zone, kill another Elite, and go back to the southern entrance. If players have the Eastern Railway Junction Access Card V1, they can start the Refinery event. Same as with the Sutherland Chemical Plant event, players will receive 50 to 75 Acid when they defeat all the waves of enemies.

1 Greywater Industrial Zone – Manibus

Between 40 To 70 Per Run

• Avg. yield per kill: 3 units (Normal) 5 units (Elite)
• Best Route: South> Center> East – Repeat
• Avg. respawn time: 1:45 (Normal) 3:25 (Elites)
• Zone Level: 23

The Greywater Industrial Zone is located in the northern part of the Iron River area, and this is by far the best place to farm Acid in Once Human. From the southern entrance, players should go to the center and take down several enemies. Then, they can turn to the east and follow the building lines to the warehouse area. Here, players can gather a lot of useful scrap items that will help them craft their first car.

Clear the normal and Elite enemies, and don’t forget about the flying Jellyfish enemies hiding among the Oil Tanks and Pipes. Most of these enemies have a greater resource yield than in other areas, and their respawn times are average. But players have to be at least level 23 before they try to farm in this zone.