How do you deal with teammates who won’t help at all?

The cleanest answer is usually to stop expecting random groups to behave like a coordinated squad. In tougher content, I’d treat matchmaking as a bonus, not the plan. Go in with a loadout that can carry more of the mission on its own, bring enough mats to set up the core defenses yourself, and only commit to a run if you can still finish when nobody else helps.

If someone is clearly not contributing, I’d focus on protecting the objective and finishing fast rather than trying to teach them mid-mission. Arguing or testing them by refusing to build usually just burns your own resources. If the game gives you a way to leave without losing much, that can be the better call. It is annoying, but saving your time is worth more than trying to fix random teammates.

I look at it from a practical angle. If the mission can be soloed or mostly soloed, fine, just do that and don't count on strangers. If it actually needs coordinated input, then premade groups are the answer, because random matchmaking is way too inconsistent for trust to be the default.

For AFK types, I’d report, block if the system allows it, and keep going. For the people who stand around but are technically present, there’s not much to do besides refuse to babysit them. The fewer resources you sink into proving a point, the better.

The annoying part is that bad behavior gets multiplied in higher difficulty missions because one lazy player can wreck the whole pace. So I’d keep a few habits ready. Build only what is needed, trap the paths that matter, and don’t overinvest in fancy defense if the lobby already looks shaky. If the mission starts going sideways, cut losses early instead of sinking more mats into a bad run.

Also, when someone refuses to contribute, it helps to think in terms of mission outcome, not fairness. You are not there to win an argument about effort. You are there to get rewards. If that means doing the minimum group-wise and the maximum personally, then that is the reality of random matchmaking.

One thing that can help is setting expectations early, but in a very short way. A quick note about trapping a lane, covering a side, or asking for mats can sometimes get one or two people to wake up. If they ignore it, you already have your answer and can stop worrying about the social part.

That said, I would not spend the mission chasing cooperation that is not there. Random lobbies are inconsistent by nature. So the real fix is a mix of selective queueing, strong self-sufficiency, and being willing to abandon hopeless matches before they drain you.