Life-Steal Player Tank

Compare every surfaced partner effect at base rank and full condensation. Effects marked Unique can still scale by rank, but a second carrier of the same species adds nothing. Two different species carrying the same effect do add together.

Pal / role	Partner effect	Affects	Rank 1	Rank 5
FelbatLife-steal engine	Trainer and Pal Life Steal	You and pal	5%	9%
SolenneRanged amplifier	Trainer Ranged Attack	You	30%	80%
XenogardEnergy weapon amp	Energy Weapon Damage	You	10%	35%
SilvegisShield recovery	Shield Recovery Start Rate	You	30%	60%
SilvegisShield recovery	Shield Damage Reduction	You	65%	80%
Tetroise PrimoGear endurance	Equipment Durability Preservation	You	80%	100%

Values verified against current partner-skill rank curves

The one build in the library where a mutation passive is the single highest-value implant, because Immortality life steal is the only thing in the game that compounds with Felbat.

Xenogard ties this build to the energy weapon family, and life steal ties it to sustained fire. Those two constraints pick the weapon between them. Materials shown are the first craftable tier.

Attack first even though this is a survival build, because life steal makes attack and healing the same stat.

1. 1AttackFirst. Felbat returns a percentage of damage dealt, so every point of attack raises both your damage and your recovery.
2. 2HealthSecond. Life steal refills a pool, so a larger pool gives you more room to absorb a spike before the healing catches up.
3. 3StaminaThird, for repositioning while the shield regenerates.
4. 4Weight and work speedLast. Neither does anything in a raid.

A raid build, which means the fight is long and attrition is the threat rather than any single hit. The loop is simple and the discipline is not stopping.

1. 1Field Felbat, do not bench it

   Life steal is worded as you and Felbat fighting together, so it only applies while Felbat is the active pal. Leaving it in a party slot gives you nothing, and this is the mistake that quietly ends most attempts at this build.

2. 2Equip an energy weapon or drop Xenogard

   Xenogard 35% only pays on the beam and plasma family. Running it with a ballistic rifle means playing four slots instead of five, so either commit to the weapon class or swap the slot for Nyafia and use a shotgun.

3. 3Keep firing, because firing is healing

   Every point of damage returns 9% of itself as Health at full condensation. Backing off to recover is exactly backwards: retreating switches off your healing at the moment you need it most.

4. 4Break line of sight when the shield drops

   Silvegis shortens shield-regeneration delay by 30% to 60%, so a brief pause behind cover returns the shield much faster than it would otherwise. That is the one moment where stopping is correct.

5. 5Let Tetroise Primo carry the long attempt

   Weapon and armor durability rises by 80% to 100%, which roughly doubles how long a raid attempt can run before gear degrades. It contributes nothing to a five-minute fight and a great deal to a forty-minute one.

6. 6Accept what life steal cannot fix

   Poison and Burn tick as a percentage of your maximum Health and ignore Defense. They scale with the same stat your healing refills, so they cancel out rather than being outpaced. Idiosyncratic immunity is the only real answer.

The durability slot is the one people question, and the life-steal mechanic is the one people misread. Both are worth setting out.

Cutting Tetroise Primo for more combat value

The case for it
Equipment durability contributes no damage, no healing and no mitigation. In a five-slot party that looks indefensible.

It is indefensible in a short fight, and the guide says so: for a quick boss attempt, swap it for Lyleen party heal or Celesdir regeneration. Its case is specifically the long raid, where 80% to 100% more durability roughly doubles the attempt length before your weapon and armor start failing. Judge the slot by how long you intend to be in there.

Benching Felbat and keeping the life steal

The case for it
Partner effects normally work from the party slot without fielding the pal, so Felbat should heal you from the bench like Silvegis and Solenne do.

Life Steal is one of the exceptions. Its description requires you and Felbat to be fighting together and its effect targets both of you, so the pal has to be out. This is the single most consequential misreading available in the build, because it silently removes the entire sustain plan.

Running Xenogard with any weapon

The case for it
Xenogard, Nyafia, Robinquill and Pupperai all carry the same 10% to 35% effect type, so the slot should pay out regardless of what you are holding.

The effect type is shared but the condition is not. Xenogard covers energy weapons, Nyafia shotguns, Robinquill bows and Pupperai melee, and only the matching one fires. The Beam Scatter is the single weapon that satisfies two of them at once, being both a shotgun and an energy weapon.

Treating life steal as a substitute for mitigation

The case for it
Nine percent of all damage dealt, returned as Health, sounds like it should keep you alive through anything given enough damage output.

It scales with your damage, not with the boss. Against a raid boss that deals a large single hit, life steal cannot pre-emptively heal what has not happened yet, which is why Silvegis is in the party. Recovery answers sustained chip damage; mitigation answers spikes. This build carries both on purpose.

Xenogard and Tetroise Primo are the two that take real effort. Felbat and Silvegis are ordinary catches, and the passives matter more here than the pals.

1. Catch or breed the five palsEvery recruitment route is on the role cards above, pulled from the mapped spawn tables. All five are breedable, so a missing species is a breeding project rather than a wall.
2. Condense Felbat and Silvegis firstFelbat goes from 5% to 9% life steal and Silvegis from 65% to 80% shield damage reduction with a 30% to 60% shorter regeneration delay. Those two decide whether the attrition loop holds.
3. Condense the rest to rank 5The remaining headline values are rank 5: 80% attack from Solenne, 35% energy weapon damage from Xenogard and 100% equipment durability from Tetroise Primo.
4. Chase Immortality before anything elseIt adds 5% life steal on top of Felbat 9% and 15% attack that feeds it again. It is the only passive in the game that compounds with this build core mechanic, which makes it a higher priority than either bounty implant.
5. Work the recycler for IdiosyncraticPoison and Burn are the gap. They tick as a percentage of maximum Health, ignore Defense, and cannot be outhealed by a mechanic that scales with your damage rather than with time.
6. Reach technology 78 for the Plasma RifleIt is the best energy weapon for this build because sustained damage per second is sustained healing per second. Run the Laser Rifle from technology 51 until then.Plasma Rifle materials

Keep the build's identity while adapting the lineup to the pals you own or the encounter ahead.

CelesdirRestores 0.15% to 0.75% Health per second with no condition attached, and unlike Felbat it works from the party slot without being fielded. The better pick if you want to field something other than a bat.LovanderThe same 5% to 9% life-steal curve as Felbat. Interchangeable, so use whichever is better bred.LyleenAn activated 80% to 90% party heal on a 300-second cooldown. Swap it for Tetroise Primo when the attempt is short enough that durability never becomes the problem.NyafiaReplace Xenogard when you are using a shotgun rather than an energy weapon. Only the bonus matching your equipped weapon pays out.