Will of Crota: First Section
The Will of Crota can broken down in four sections. The first of which is the room where you must survive until the security beams on the door disappear. This part isn’t too bad since the room is relatively large compared to other areas of the strike and you are afforded a decent amount of cover. But don’t take it too easy, there are a ton of enemies you will have to deal with.
The most important enemies to look out for are melee enemies. Particularly thrall and stealth vandals. They will try their best to flank you. This is even more important if you plan on attempting this strike on Nightfall difficulty. One of the modifiers is Lightswitch, which means you can die from one melee hit, even if it comes from an enemy as weak as a thrall.
Easy way to avoid this is to keep your back to the wall. There is also a room with a window where you can easily take cover while keeping a line of sight on whatever is in the room. Use this position to defend yourself and pick of snipers since they will do the most damage at long range. They will do arc damage which is yet another thing to be wary of if attempting on nightfall.
All in all this is the most straightforward part of the strike. Clear the waves and you’re free to proceed.