こっちにきてから、ずっと近所でビバークしてたの？大変だったね。

、？。

Have you been bivouacking around the neighborhood ever since you came here? That must have been tough.

Literal

This-way [to-に] came since, all-along neighborhood [at-で] bivouacking [progressive-てたの]? Tough [past-だった] [confirm-ね].

ビバーク is a loanword from German 'Biwak' (bivouac), used in Japanese hiking/mountaineering parlance for emergency overnight camping. ~てたの is the casual contracted progressive ~ていたの with the feminine/inquisitive の. 大変だったね 'that must have been tough, huh' is a standard empathetic response.