Engineer: Zero Sum
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| Engineer: Zero Sum | |
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| As Engineer, finish charging the teleporter with zero monsters remaining on the stage. | |
| Unlock | Thermal Harpoons |
Engineer: Zero Sum is a challenge in Risk of Rain 2. It is completed as 
Engineer
EngineerThe Engineer is a unique class that requires planning and positioning to be successful.
Class: Ranged
HP: 130 (+39 per level)
Damage: 14 (+2.8 per level)
Armor: 0
Umbra: Fortification Expert by finishing charging the Teleporter with zero Monsters remaining on the stage.
Tips
- The easy method is to charge the Teleporter to 99% without killing the Teleporter Boss, at which point no more monsters will naturally spawn. Kill the remaining monsters then kill the Teleporter Boss to complete the challenge.
- Can be done on Prismatic Trials.
Version History
- Major Content
- Added New Engineer Challenge: Zero Sum
| Risk of Rain 2 Wiki |
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| Survivors |
 Acrid AcridAcrid is a melee-range hybrid who uses powerful poisons to melt tanky enemies.Class: Melee / Ranged HP: 160 (+48 per level) Damage: 15 (+3 per level) Armor: 20 Umbra: Test Subject •  Artificer ArtificerThe Artificer is a high burst damage survivor who excels in fighting large groups and bosses alike.Class: Ranged HP: 110 (+33 per level) Damage: 12 (+2.4 per level) Armor: 0 Umbra: Herald of the House Beyond •  Bandit BanditThe Bandit is a high-skill combo character that can dish out devastating backstabs while weaving in and out of stealth.Class: Ranged HP: 110 (+33 per level) Damage: 12 (+2.4 per level) Armor: 0 Umbra: Desperate Outlaw •  Captain CaptainThe Captain is a unique survivor that can control the battlefield with utility and damage - with help from the UES Safe Travels.Class: Ranged HP: 110 (+33 per level) Damage: 12 (+2.4 per level) Armor: 0 Umbra: Tired Veteran •  Commando CommandoThe Commando is a jack-of-all-trades character that is reliable in all situations of the game.Class: Ranged HP: 110 (+33 per level) Damage: 12 (+2.4 per level) Armor: 0 Umbra: Cornered Gunslinger • EngineerEngineerThe Engineer is a unique class that requires planning and positioning to be successful.Class: Ranged HP: 130 (+39 per level) Damage: 14 (+2.8 per level) Armor: 0 Umbra: Fortification Expert •  Heretic HereticThe Heretic is a powerful character who can only be accessed through extraordinary means.Class: Ranged HP: 440 (+132 per level) Damage: 18 (+3.6 per level) Armor: 0 Umbra: Unorthodoxy Risen •  Huntress HuntressThe Huntress is an extremely mobile but fragile survivor with a high damage output.Class: Ranged HP: 90 (+27 per level) Damage: 12 (+2.4 per level) Armor: 0 Umbra: Judge, Jury, Executioner •  Loader LoaderThe Loader is a slow but powerful bruiser that can use her grappling hook to uniquely navigate the environment.Class: Melee HP: 160 (+48 per level) Damage: 12 (+2.4 per level) Armor: 20 Umbra: Bionic Powerhouse •  Mercenary MercenaryThe Mercenary is a high skill melee survivor that uses his many dodges to weave in and out of combat.Class: Melee HP: 110 (+33 per level) Damage: 12 (+2.4 per level) Armor: 20 Umbra: Hired Blade •  MUL-T MUL-TMUL-T is an aggressive survivor who has the tools necessary for any job!Class: Melee / Ranged HP: 200 (+60 per level) Damage: 11 (+2.2 per level) Armor: 12 Umbra: Right Tool for the Wrong Job •   Survivors of the Void - DLC ContentRailgunner is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.  Railgunner Survivors of the Void - DLC ContentThis content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.RailgunnerThe Railgunner is a long-range, single target survivor that can instantly kill any high priority target - and from any range. Class: Ranged HP: 110 (+33 per level) Damage: 12 (+2.4 per level) Armor: 0 Umbra: Forgotten Nomad •  REX REXREX is a half robot / half plant that uses HP to cast devastating skills from a distance. The plant nor the robot could survive this planet alone – but thankfully they have each other.Class: Ranged HP: 130 (+39 per level) Damage: 12 (+2.4 per level) Armor: 20 Umbra: Symbiotes • Survivors of the Void - DLC ContentVoid Fiend is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.  Void Fiend Survivors of the Void - DLC ContentThis content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Void FiendThe Void Fiend is a corrupted survivor that fluctuates between a controlled and corrupted form, each with different strengths and weaknesses. Managing this curse has become its fate. Class: Ranged HP: 110 (+33 per level) Damage: 12 (+2.4 per level) Armor: 0 Umbra: Corrupted Amnesiac |
| Environments |
Abandoned Aqueduct Abandoned Aqueduct (Stage 2)Origin of Tar You dream of sand beneath your feet. Massive skeletons and pools of tar are littered around, and a towering aqueduct pouring down tar dominates the area. • Abyssal Depths  Abyssal Depths (Stage 4)Tectonic Relics You dream of fire. A hellfire-forged zone of blazing heat, the Abyssal Depths are believed to be a continuation and adaptation of the Magma Barracks from Risk of Rain. • Survivors of the Void - DLC ContentAphelian Sanctuary is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info. Aphelian Sanctuary  Survivors of the Void - DLC ContentThis content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Aphelian Sanctuary (Stage 2) Cleansing Center You dream of clarity. • Commencement  Commencement (Final)Moon of Petrichor V You dream of glass and dirt. Large domain located above the shattered breach of  Petrichor V's moon. It is made up of the shattered remains of four individual sections, emblematic of  Mithrix MithrixKing of NothingHP: 1000 (+300 per level) Damage: 16 (+3.2 per level) Class: Melee / Ranged Speed: 15 m/s Armor: 20 and Providence's tools of creation. • Distant Roost  Distant Roost (Stage 1)Ground Zero You dream of waves, crashing on cliffsides. Spires of earth jut through the fog and unknown avian creatures circle far peaks guarding their broods. • Rallypoint Delta  Rallypoint Delta (Stage 3)'Contact Light' Survivor Camp You dream of quiet snowfall. Rallypoint Delta is the remains of a makeshift camp constructed by a group of scattered crew members from the UES Contact Light, somewhere in the frigid tundra of Petrichor V. • Scorched Acres  Scorched Acres (Stage 3)Wisp Installation You dream of wind, blowing through trees. Large, circular platforms make up the majority of the stage, and embers float through the air. • Survivors of the Void - DLC ContentSiphoned Forest is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info. Siphoned Forest  Survivors of the Void - DLC ContentThis content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Siphoned Forest (Stage 1) Ground Zero You dream of fire and ice. The map is blanketed in a layer of snow, with large trees surrounded by platforms spanning multiple levels. • Siren's Call  Siren's Call (Stage 4)Ship Graveyard You dream of wind. • Sky Meadow  Sky Meadow (Stage 5)Sprite Fields You dream of serenity. • Survivors of the Void - DLC ContentSulfur Pools is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info. Sulfur Pools  Survivors of the Void - DLC ContentThis content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Sulfur Pools (Stage 3) Pungent Spring You dream of brimstone. Tiered lakes of shallow sulfur pools. Arcing bridges and underground caves connect the map together. • Sundered Grove  Sundered Grove (Stage 4)Dormant Locus You dream of violent growth. Ancient flora has risen up to reclaim this once sacred refuge. Mazes of roots and overgrown fungus have twisted the landscape, leaving only ruins. • Titanic Plains  Titanic Plains (Stage 1)Ground Zero You dream of rolling hills. Gigantic stone arches bracket the skyline, while the main play-field overlooks a vast fractured tectonic lowland. • Wetland Aspect  Wetland Aspect (Stage 2)Rehabilitation Zone You dream of twisting roots. Full of ruined stone structures and swampy areas filled with water. |
| Hidden Realms |
A Moment, Fractured A Moment, Fractured (Hidden Realm)Hidden Realm: A Moment, Fractured Multiple floating islands in a void, with sharp blue crystals embedded in them. The Obelisk can be found on top of the last island. • A Moment, Whole  A Moment, Whole (Hidden Realm)Hidden Realm: A Moment, Whole A bleak and desolate realm. The refuge of the  Twisted Scavengers, safe from Mithrix'sMithrixKing of NothingHP: 1000 (+300 per level) Damage: 16 (+3.2 per level) Class: Melee / Ranged Speed: 15 m/s Armor: 20 vengeance and destruction. • Bazaar Between Time  Bazaar Between Time (Hidden Realm)Hidden Realm: Bazaar Between Time This stage serves as the shop in Risk of Rain 2. Players can purchase various Items with Lunar Coins or exchange items for higher-rarity ones in two crucibles. • Bulwark's Ambry  Bulwark's Ambry (Hidden Realm)Hidden Realm: Bulwark's Ambry The area consists of block-shaped platforms, with the Artifact Reliquary in the center. • Gilded Coast  Gilded Coast (Hidden Realm)Hidden Realm: Gilded Coast You dream of wealth. This area is where the player fights the boss Aurelionite, the Titanic Goldweaver. • Survivors of the Void - DLC ContentThe Planetarium is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info. The Planetarium  Survivors of the Void - DLC ContentThis content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.The Planetarium (Final) Cell V The Planetarium is an area somewhere within the Void, housing a collection of planets detained by the Void's denizens. It is inhabited primarily by the Voidling, the guard of the Planetarium or potentially the controller of the Void itself. • Void Fields  Void Fields (Hidden Realm)Cosmic Prison Hidden Realm accessible only through the Bazaar Between Time. Until the cell is stabilized, the Void Fields will constantly "suffocate" the player for a small percentage of their current health. • Survivors of the Void - DLC ContentVoid Locus is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info. Void Locus  Survivors of the Void - DLC ContentThis content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Void Locus (Hidden Realm) Cell IIIVIIIIIILVIIIVLVILIVLLLVVVILIVLI You dream of potential. The Void Locus contains many Void Potentials and Cradles in place of chests, and is inhabited by Void monsters. |
| Expansions |
| Survivors of the Void - DLC Content This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Survivors of the Void |
| Alternate Game Modes |
| Eclipse • Prismatic Trials • Survivors of the Void - DLC Content This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Simulacrum |
| Mechanics |
| Armor • Damage • Directors • Enemy AI • Family Events • Gold • Health • Item Stacking • Lunar Coins • Movement Speed • Proc Coefficient • Survivors of the Void - DLC Content This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Void Fog |
| Other |
| Developer Console • Development Team • Languages • Modding • Soundtrack • Unreleased Items • Version History |