Epic has been trying to add achievements to the Epic Games Store for a while now. The company has taken the first step, adding the feature to Ark: Survival Evolved for starters. It now shows achievements as they are unlocked. The company seems to be rolling this out bit by bit. So if it's a feature you're waiting for, unfortunately, you might still need to wait a bit.
Some of the other plans Epic has for its Games Store include mod support for games, dynamic price adjustments for bundles, and a "Trending" category on the storefront.
Source: PCGamer