Ascetic refers to someone who practices strict self-discipline and renunciation for spiritual or moral reasons.

Torpor describes a state of physical or mental inactivity, being in between sleep and wakefulness.

Narcissism is characterized by excessive self-love, need for admiration, and lack of empathy for others.

Anchorite is a religious recluse who has withdrawn from society for spiritual reasons, especially in early Christianity.

Sesquipedalianism refers to using long, complex words unnecessarily. Verbosity is wordiness in general, Grandiloquence is pompous speech, and Bombast is inflated language.

Epigraphy studies inscriptions on stones or ancient objects. Paleography studies ancient handwriting, Archaeology studies past civilizations broadly, and Numismatics studies coins.

Ergonomania (ergo=work, mania=excessive desire) means obsessive work addiction. Workaholism is colloquial; Diligence and Industriousness mean normal hard work.

Both idioms are correctly used. 'Came to the forefront' means became prominent, and 'not a flash in the pan' means it's not temporary success.

'Put all eggs in one basket' means to risk everything on one strategy, which is correctly applied here to criticize the marketing team's approach.

'Bury the hatchet' means to end a conflict and make peace, which perfectly fits the context of reaching a compromise.