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Onos

The alien tank. Huge health, charges through marines, Gores structures, and Stomps groups of marines.

Onos

The Onos is the biggest lifeform: 700 health and 450 armor at biomass 1, growing by 50 health per biomass level. It soaks damage for the team, tramples marines with Charge, and tears through structures.

Abilities#

KeyAbilityEnergyDamageUnlock
1 Mouse1Gore1090Start
ShiftCharge20/s12Start
2 Mouse1Bone Shield (hold)––Biomass 6 + research
Mouse2Stomp (with Gore or Bone Shield out)3040Biomass 8 + research

Gore#

Melee horn attack: 90 structural damage (180 against structures). Against marines it also knocks them back. Affected by Focus.

AttackNo upgradeFocus (3 Veils)Crush (3 Spurs)
A0A1A2A3A0A1A2A3A0A1A2A3
Onos gore233422332334

Hits to kill a full-health marine by armor level (A0–A3). A dot means the attack does not benefit from Focus.

Charge#

Hold Shift while moving forward to charge at 12.5 m/s, costing 20 energy per second. Marines in the way are knocked aside and take damage. Charge is innate: no research needed.

Bone Shield#

Raises bone plates in front of the onos. While held, hits on the front go into the shield's own pool of 1000 hit points instead of the onos; only damage beyond that pool gets through. Heavy damage (minigun) counts double against the shield, and railgun shots hurt both the shield and the onos. While shielding the onos moves at 68.2% speed and cannot attack. The pool recharges at 80 per second, starting 3 s after the last use in combat or 6 s after it breaks. Requires Biomass 6 and research (25 team res).

Stomp#

Secondary attack (Mouse2) while Gore or Bone Shield is out, standing on the ground. The onos slams the ground and sends a shockwave forward (12 m). Marines on the ground hit by it take 40 damage and are stunned for 2 s. A marine cannot be stunned again for 4 s after a stun. Only things near the ground are hit, so jetpackers in the air escape. Sentries are confused and mines set off. Exosuits are not stunned by Stomp. After a successful Stomp there is a 4 s cooldown (from Gore or Bone Shield alike); the alien HUD shows it filling up. Requires Biomass 8 and research (35 team res, 90 s).

Combos#

Against armored marines, Stomp saves a gore as well as stunning:

Onos stomp + 2× Onos gore vs Marine A1 Kill
Start
100hp 50ar
Onos stomp
88hp 22ar
−12 hp · −14 ar
Onos gore
42hp 0ar
−46 hp · −22 ar
Onos gore
0hp 0ar
−90 hp · −0 ar
TargetOnos gore hits needed after this many onos stomps
012
Marine A0221
Marine A1321
Marine A2322
Marine A3432

Full-health targets. A highlighted cell means that many onos stomps save a onos gore compared with the cell to its left.

See Kill combos.

Onos eggs#

With Biomass 9 the commander can make Onos Eggs (100 team res).

Health by biomass#

BiomassHealthArmor (no Carapace)Armor (3-shell Carapace)
1700450520
5900450600
91100450680
121250450740

Tips#

  • You are a tank. Go first, absorb fire, and let skulks and fades clean up behind you.
  • Retreat at half health; an onos costs 55 personal res.
  • Gore power nodes and phase gates. Charge through marines to scatter them.
  • Watch for marines with nerve gas, miniguns and mines.

See also#

Onos guide · Hits to kill

Hover any number to see where in the game code it comes from.
Page source: content/aliens/onos.md · Natural Selection 2 © Unknown Worlds Entertainment. Fan wiki, not affiliated.