If you want a conclusion to Lenin's question ‘What is to be done?’, you may be disappointed by Althusser’s book. Written in 1978 but ultimately unfinished, the book focusses on the emergent Eurocommunism and their focus on civil society rather than the state but Althusser's critique remains largely moralistic.

What is to be done?
Louis Althusser, trans. by G. M. Goshgarian
Polity, 2020
9781509538614