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The player history is primarily a player log, and will not be integrated into the achievement system. The history is a step-by-step record of your player's development, so it will remain separate from the achievement system.
Don't worry, from the time achievements are implemented, everyone will be eligible to complete everything. For example, there's not going to be a situation where you can't get a seasonal activity completion just because you haven't participated in all of the seasonal events up until now.
However, there will be story-related achievements like "Completed the 7th Umbral Era Quests" and stuff like that that can only be completed before the the rebirth in 2.0.
We will introduce the achievement system in a future topic.