The tuning is DADFAD, or open D minor.
Intro
D|--12--3----5--3---------12--3----5--3-----------|--------------------------|
A|--------5--------5p3h5-----------------5p3h5----|--------------------------|
F|------------------------------------------------|--------------------------|
D|------------------------------------------------|--------------------------|
A|------------------------------------------------|--------------------------|
D|------------------------------------------------|--------------------------|
Play this twice, than Hozier ads the D6 D4 bassline to the intro riff, it's tricky but possible to learn.
I'm in the process of learning it right now, so I should update the tab in some time.
************************************
| h Hammer-on
| p Pull-off
************************************