I believe dev are not native english speakers, and some achivement descriptions are misleading. Just a quick recap so you don't waste your time understanding why these achivements are not unlocking.

Rest is for the Weary
Receive more than 25 Fatigue in a fight

It's not "receive", but "have". In other words, you need to have at the same time 25 fatigue in your deck. Achivement unlocks as soon as you reach this threshold during the fight, so keep on adding fatigue until this pops out.

Don't Talk to Me
Gain more than 100 Focus in a fight

It's not "gain", but "have". Example: you can gain 20 focus each turn, and spend it each turn, and it will never unlock. You need to reach 100 focus during the fight. Achivement unlocks as soon as you reach this threshold during the fight, so keep farming focus without attacking until this pops out.