How the battlepass works?

[Bob, El Deconstructor]

Once finished theres no way back to continue it? There will be a battlepass support ending? Its worth waiting to all battlepass realeases to buy the game?

[Hundinger]

Do you mean the cosmetics? They are done with them, no new ones are released. They still do repeats of old events and you can buy packs that have already been repeated. Note that it's mostly profile pictures and just a few weapon, slayer and demon skins. Demon skins can only be used in multiplayer alas.

I wouldn't bother spending money, but you do you.