- Mantis: The oxygen must drain in under 5 seconds (takes 3 Lanius for a win)
- 2 Lanius get a fair fight at oxygen 1 or less; if the Lanius escape at very low health, the Mantis will likely die of suffocation afterward.
- Rock or Crystal: The oxygen must drain in under 7.5 seconds (takes 2 Lanius, oxygen 2 or less)
- Human, slug: The oxygen must drain in under 15 seconds for an advantage (takes 2 Lanius if oxygen is at 2 or more)
- Engi, single Zoltan: The Lanius will win regardless.
- 2 Zoltan: The oxygen must drain in under 10.5 seconds to ensure survival (takes 2 Lanius if oxygen is powered, takes 3 Lanius if oxygen is at level 3).
- 3 or more Zoltan: Everyone dies (except maybe that fourth Zoltan, if there is one).