This is a guide for tips and tricks in Destiny, to be updated as new information comes up.
Inspecting A Guardian's Build
When you are front facing a fellow Guardian, you can click the right thumbstick, and press options. You will get a menu that allows you to choose Inspect Player. This will allow you to see the Guardian's level, weapons, and gear. If said Guardian is in the middle of modfigying their build, you can see those weapons and gear get switched in real time. You can also unlock an Achievement called Inspector by doing this.
Ghosts Can Open Doors
When you get to Hellmouth, you may see some mysterious looking doors. If you take your Ghost out, they will open these doors automatically. For now,
Riding A Pike In Old Russia
Getting a Pike to ride is harder than it sounds, particularly because you depend on a random event. Still, it's a fun activity you may want to give a try when you get the chance. You will also want to level up to Vanguard level so that you're ready for the coming encounter.
Of course, you will want to go to Earth, specifically Warmind, Old Russia, and seek out an area filled with dilapidated ships. You will want to obliterate everything in that area. And then, it's a waiting game for some Pike riding Vandals to appear in the area, and here's where the random event begins.
Assuming you luck out and the Pike riders come running, take them out and get a free ride.