fz-survival-datapack/data/fz/advancements/event/on_dead.json

{
    "criteria": {
        "on_dead": {
            "trigger": "minecraft:tick",
            "conditions": {
                "player": [
                    {
                        "condition": "minecraft:entity_scores",
                        "entity": "this",
                        "scores": {
                            "fz.event.death_count": {
                                "min": 1
                            }
                        }
                    }
                ]
            }
        }
    },
    "rewards": {
        "function": "fz:event/player/on_dead"
    }
}