Akademik

пуститься во все тяжкие
ПУСКАТЬСЯ/ПУСТИТЬСЯ ВО ВСЕ ТЯЖКИЕ <BO ВСЯ ТЯЖКАЯ obs> coll, disapprov
[VP; subj: human; more often pfv]
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1. to begin to behave in a morally reprehensible manner (usu. by starting to drink excessively, womanize etc):
- X пустился во все тяжкие{{}} X has plunged into dissipation (into a life of moral abandon);
- X has become a wastrel (a profligate, a rake etc);
- X has adopted (taken to) a disgraceful (shameful etc) life style;
- X has abandoned himself to drinking (debauchery etc).
2. to resort to any means (occas. unlawful) in order to achieve one's aims:
- X пустился во все тяжкие{{}} X went to all lengths;
- X pulled out all the stops;
- X went all out;
- X did whatever it took.

Большой русско-английский фразеологический словарь. — М.: ACT-ПРЕСС КНИГА. . 2004.