Nice font. I really appreciate that it supports non-latin alphabets. Even though it seems that these alphabets come from the original font (deja vu maybe?) and hasn't been much worked on, it still is extremely useful!
Some critic:
The small i seems a bit funny to me. It is like a greek iota (ι) with a dot on top. Also it is a bit tall font. Whilst that makes text/code more readable, on the same time it let you see less lines on your terminal. My main mono font (Liberation Mono), lets me see comfortably 51 lines in a full screen terminal on a 15.6" laptop. Hack font only shows 45 lines (11% less code :p) at an equally acceptable size.
Some critic:
The small i seems a bit funny to me. It is like a greek iota (ι) with a dot on top. Also it is a bit tall font. Whilst that makes text/code more readable, on the same time it let you see less lines on your terminal. My main mono font (Liberation Mono), lets me see comfortably 51 lines in a full screen terminal on a 15.6" laptop. Hack font only shows 45 lines (11% less code :p) at an equally acceptable size.