知識は力なり

You can borrow a relevant unit from a friend for this achievement. You can run Difficulty 1 in Echo of War without spending stamina (after your 3 weekly runs). You can also run Forgotten Hall 1.

"Knowledge is Power" is a well-known proverb that emphasizes the importance of knowledge in achieving success and influence. This phrase is often attributed to Sir Francis Bacon, an English philosopher and statesman, from his work "Meditationes Sacrae" (1597). The idea behind this saying is that being well-informed and educated equips a person with the power to make informed decisions, influence others, and navigate the world more effectively.