The two-step. Every robot dies fastest when you prime it first, then detonate it. A teammate can detonate what you primed, and that pays triple.
The job. Clear each wave. Robots drop in where the red brackets show. Your posse shares a pool of lives; a downed cowboy can be revived before the claim window runs out.
Heat. Reloading, hovering and flying all build heat. At full heat you catch fire. Dodge roll to put yourself out.