Verified class boundary
Weapon pressure
Abilities, status, and source links are separated from editorial recommendations.01 // Confirmed record
Abilities confirmed for Duelist
The launch notes identify Burst Configuration perk behavior, Shrapnel Grenades, and Gunslinger descriptions as Duelist records.
Evidence: Official Patch 1 notes

02 // Squad use
Where this class fits in a fireteam
Editorial starting plan: stay where your sightline remains useful after the first enemy wave reaches the squad, then reserve grenade pressure for a lane that is already being watched.
Pairs cleanly with Machinist: one class helps make the lane predictable while the other concentrates weapon pressure into it.
These are editorial play suggestions, not developer-confirmed best builds. Patch changes, difficulty, weapons, and squad composition can change the right answer.
03 // Video reference
Watch the official launch trailer
Use the official trailer as a visual reference for the game’s co-op combat. For class-specific details, follow the class source above rather than assuming every trailer moment represents this exact kit.
04 // Continue the briefing