I think the reports are they had some more planned that weekend but couldn't accomplish everything in their initial plan.
I do think after the initial attack the plan was to hunker, bleed the IDF in any sort of ground war and try to leverage the media cycle so they get a few days of bad press for the attack and then Israel/IDF gets weeks or months of bad press for the retaliation.
It's absolutely cruel and cynical but that's how I think Hamas leadership, who are safe in Qatar, operate. They just care more about hurting Israel than protecting the Palestinians. And Iran has a clear agenda here too in preventing Israel-SA relations improving which would really isolate Iran in the region.
Considering who is charge of both Hamas and Israel, I think there is no chance that Hamas leaders didn't expect exactly this to happen which would mean this was always their endgame, intentionally sacrificing their civilians. Just like people say right wing parties like Likud benefit from Hamas rather than a more moderate PLO, Hamas likewise benefits from an aggressive Israel rather than one working for peace.