Some lesster known details for you to check out.
* Standing behind waterfalls / mist produces a rainbow effect (as it would in real life)
* Grass reacts to being disturbed, blade by blade, walk slowly through it while looking down to see it in action.
* When a person choses EXO as their race, all voice communication from them via headset is filtered to be robotic.
* When using revolver/hand canon, squeezing the trigger gently slowly draws back the guns hammer, in preparation to fire.
* Radio static on voice communications the further away the other player gets, or if there's an obstruction, or if a super has been activated (electronic distortion).
* Standing under water and looking up distorts your vision
* At night, sometimes there are shooting stars.
* Sparrows have a reverse beep (new to beta)
* Hive Thralls are much agressive to you if you're riding a sparrow
* Headshots/precision kills increase chances of dropping an encoded engram
* There are three areas not supposed to be accessible in the beta, that you can access, Kings Watch, Bunker and Jovial compound.
* You can call for your sparrow while falling
* There are giant birds in the skies above earth, and giant dragons in the skies of some multiplayer maps
* Cryptarcs highest level is 20 (I know, I have cryptart 20 right now)