Yes – this version covers the main story and all endings. The only untranslated elements are some minor item names and battle cries, which don’t hinder gameplay.
" likely refers to the second volume or sequel content of the light novel/game series Harem in the Labyrinth of Another World Isekai Meikyuu de Harem wo Light Novel Summary (Volume 2) In the second installment, the protagonist, Michio Kaga Harem In Maze 2 English Patch.epub