Core problem: Get four people into the same fireteam across PC (Steam/Epic), PS5, and Xbox, and actually talk to each other in-game. The first game had late and limited crossplay with no real cross-platform voice. AFE2 fixes that, but you still need to set it up correctly.

1Patch First, Then Enable the Pool

Friends-only lobby vs Quick Play: Four friends who already know each other, use a private lobby with the strongest connection hosting. Need a 4th, use Quick Play on the same difficulty. Empty slots fill with AI, but bots do not use class abilities the way humans do.

2Form the Four-Player Squad

Same-platform friends: use the platform friends list and invite as usual.

Cross-platform friends (invite code flow):

Xbox-specific: if an invite still fails after the patch, have the Xbox player join from the in-game friends/cross-play list instead of the Xbox overlay invite.
You can run with 1-3 humans and AI fills the rest. For higher difficulties and Horde, four humans is what the encounters were rebuilt for.

3Turn On Cross-Platform Voice (In the Lobby, Not Mid-Swarm)

In-game voice is supposed to work across PC, PS5, and Xbox. Players still report it failing until settings and permissions are aligned. Do this on every machine before you drop:

PC
Windows Privacy and Device Settings
Windows Privacy, Microphone, allow the game / Steam / Epic. Disable "exclusive mode" on playback and recording devices if voice goes to the wrong output (HDMI monitor with no speakers is a common miss).
PS5
Sound and Microphone Settings
Settings, Sound, Microphone. Confirm the game can use the mic. Do not rely on a PS Party if anyone is on Xbox or PC.
Xbox
Headset Detection
Check the headset is detected. Mute/unmute on the headset itself if the game does not pick it up.
If you can hear them but they cannot hear you: mic permission or wrong input device. If nobody hears anyone across platforms: confirm the patch that targeted cross-platform friend voice is installed, then restart the game on all four boxes.

4When In-Game Voice Fails: Discord Backup

Use the official Discord server. That is what the publisher and Steam news keep pointing at for LFG and voice, and it is what first-game players used when cross comms did not exist.

5Decision Checklist Before You Launch

SituationDo this
All four same platform Platform invite + in-game voice
Mixed PC / PS5 / Xbox Cross-play code or in-game friends + in-game voice, Discord as backup
Xbox invite accepted but not joining Join from in-game list. Confirm post-launch Xbox invite fix is applied.
Need a random 4th Quick Play, same difficulty
Voice dead after 2 minutes Switch to the official Discord server, stay in that channel for the run

6Common Mistakes