Defeating Crota on normal mode is no easy feat. Defeating him on hard mode requires a group that knows all the tricks. Thankfully, VG247 have got the tricks part covered.
The video below by Arekkz Gaming covers the key points you need to keep in mind if you’re to have any chance at beating Crota on hard more.
He goes over the time Crota takes to go from right to centre to left and where you can stand to avoid the Boomer fire. The whole is done very well, only needing three sword runs.