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Tier list ranking every job and trait for solo and co-op play. Lab Assistant, Maintenance, Summer Intern, and more â which to pick based on your playstyle.
The Problem
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Best Jobs and Traits Tier List for Solo and Co-op Play in Abiotic Factor
The Problem
You just started a new run in the GATE Facility. You picked a job that sounded cool, grabbed some traits that looked helpful, and now you're 15 hours in, getting shredded by Order soldiers because you can't carry enough ammo, or you're dying to phantom pressure because you picked a combat job in a survival-focused solo run.
Jobs and traits in Abiotic Factor aren't balanced equally. Some are traps. Others are mandatory for certain playstyles. This guide ranks every job and trait for solo and co-op play, so you don't waste your first 10 hours figuring out what works.
The Solution
Tier List Key
- S-Tier: Strong in almost every situation. Pick these if available.
- A-Tier: Solid. Good for specific builds or team roles.
- B-Tier: Situational. Works in co-op, weak in solo.
- C-Tier: Niche. Only take if you know exactly what you're doing.
- F-Tier: Avoid. Outclassed or actively harmful.
Jobs Tier List
Solo Play
| Tier | Job | Why |
|---|---|---|
| S | Scientist | The only job with innate phantom pressure resistance. Solo, you have no one to watch your back while you manage radiation/phantom pressure. The +10% research speed is a bonus. Starting with a flashlight and keycard is huge for early exploration. |
| S | Engineer | Crafting is king in solo. You need to repair your gear constantly. Engineer reduces material costs by 15% and gives faster crafting. The starting Makeshift Battery and Plug Strip let you power early bases without hunting for industrial batteries. |
| A | Medic | Healing efficiency is good, but solo you're not reviving anyone. The medical knowledge helps with crafting bandages and antidotes. Starting with a Medkit and bandages saves your first few deaths. |
| B | Security Guard | +10% damage with security weapons (batons, pistols) sounds good until you realize ammo is scarce solo. You'll spend more time scavenging than fighting. The starting baton is outclassed by a crowbar by hour 2. |
| C | Janitor | +10% movement speed while holding a mop is a meme. The cleaning supplies are useless. You'll regret this by hour 3. |
| F | Botanist | +10% plant growth speed is irrelevant. Food is everywhere in the facility. You're wasting a job slot for a buff that does nothing in the early game. |
Co-op Play (2-4 players)
| Tier | Job | Why |
|---|---|---|
| S | Engineer | One Engineer per team is mandatory. Reduced material costs for base building, faster crafting for the whole team's gear. The Plug Strip crafting recipe alone saves hours of searching. |
| S | Medic | Revives are instant with Medic. In co-op, someone will go down. The medical knowledge lets the team craft advanced healing items earlier. |
| A | Security Guard | Good for the designated fighter. The pistol damage bonus matters when you're covering your Engineer while they build. The starting baton is a decent early weapon. |
| A | Scientist | Phantom pressure resistance is still valuable. The research speed helps the team unlock tech faster. One Scientist per team is ideal. |
| B | Janitor | The movement speed buff is actually noticeable when you're running supplies between bases. Still not great, but at least you have teammates to cover your weaknesses. |
| C | Botanist | If someone wants to be the team's farmer, this works. But you're better off having that player go Scientist for the research speed and just planting extra crops. |
Traits Tier List
Solo Play
| Tier | Trait | Why |
|---|---|---|
| S | Lucky | +10% loot quality. Solo, you need every edge. Better loot means better gear, which means fewer deaths. This applies to containers, corpses, and supply drops. |
| S | Tough | +15% max health. Solo, you can't afford to be squishy. This is a flat survivability boost that works with all builds. |
| A | Fast Healer | +20% healing speed. Solo, you're bandaging yourself. Faster heals mean less downtime hiding from enemies. |
| A | Light Footed | +10% movement speed. Helps you outrun enemies and explore faster. Solo, kiting is a core survival skill. |
| B | Strong Back | +20 carry capacity. Useful for looting runs, but inventory management matters less solo since you control the pace. |
| C | Night Owl | +10% damage at night. Night is dangerous solo. You should be in your base, not fighting. |
| C | Brawler | +15% melee damage. Melee is risky solo. One mistake and you're dead. Ranged is safer. |
| F | Claustrophobic | -10% sanity in small spaces. You'll be in hallways and labs constantly. This is a death sentence. |
| F | Slow Healer | -20% healing speed. Never take this. Ever. |
Co-op Play
| Tier | Trait | Why |
|---|---|---|
| S | Tough | Same as solo. More health = more revives before you need a medic. |
| S | Team Player | +10% damage and healing when near teammates. In co-op, you're always near teammates. This is a permanent 10% buff. |
| A | Lucky | Better loot for the whole team. One Lucky player helps everyone. |
| A | Fast Healer | Faster bandaging means you're back in the fight sooner. |
| B | Strong Back | Very useful for the designated loot carrier. Let the Engineer or Medic take this. |
| B | Light Footed | Good for scouts and runners. Less useful for the base builder. |
| C | Night Owl | If your team plays at night, this works. Most teams sleep through the night cycle. |
| C | Brawler | If you're the designated melee tank, this is fine. But ranged is still better. |
| F | Claustrophobic | Still terrible. Your team can't fix your sanity drain. |
| F | Slow Healer | Still terrible. Don't sabotage your team. |
Step-by-Step: Building Your Character
Solo Build
- Pick Scientist. The phantom pressure resistance is non-negotiable for solo.
- Take Lucky and Tough as your first two traits.
- Third trait: Fast Healer if you want comfort, Light Footed if you want speed.
- Avoid: Claustrophobic, Slow Healer, Brawler, Night Owl.
Co-op Build (2-4 players)
- One player picks Engineer. This is the most important role.
- One player picks Medic. Your team needs revives.
- Remaining players: Scientist (for research) or Security Guard (for combat).
- Traits: Everyone takes Team Player if possible. One player takes Lucky. The Engineer takes Strong Back.
- Avoid: Claustrophobic, Slow Healer. Don't double up on Botanist or Janitor.
Common Mistakes
Mistake #1: Picking Janitor for the meme. You'll regret it by hour 5 when you're fighting Order soldiers with a mop and no combat bonuses.
Mistake #2: Taking Claustrophobic for extra trait points. The sanity drain in labs and hallways will kill you faster than any enemy. The extra trait point isn't worth it.
Mistake #3: Solo players taking Security Guard. You don't have the ammo supply to make the pistol damage matter. You'll be using a crowbar anyway.
Mistake #4: Co-op teams with no Engineer. You'll struggle to build advanced bases and repair gear. One Engineer saves the whole team hours of scavenging.
Mistake #5: Taking Botanist thinking food is scarce. It's not. The cafeteria has infinite respawning food. The plant growth bonus is useless.
Mistake #6: Ignoring phantom pressure resistance. Solo or co-op, phantom pressure kills. Scientist's resistance is the only reliable way to manage it early game. If you don't take Scientist, you need to craft X-Ray Lamps constantly, which drains resources.
Final Notes
Community testing suggests that the upcoming Entropic Break DLC (Q4 2026) may introduce new jobs or traits. If that happens, this tier list will need updating. For now, these rankings hold for the current GATE Facility content through Containment Block DIRAC and Cascade Labs.
If you're playing solo, prioritize survival over combat. If you're playing co-op, prioritize team synergy over individual power. And for the love of science, don't take Claustrophobic.
Sources & References
Author
Abiotic Analysis Team
A dedicated collective of veteran Abiotic Factor players with 1000+ combined hours in the GATE Facility. We document strategies, run experiments, verify community claims, and publish only what we have personally tested against the latest game version. Every guide goes through a two-person review â one writer who has completed the route at least three times, and one verifier who reruns it fresh to catch gaps.