The Mystic Orbs are Zen Cactus main weapon. For each fired shot, the next shot will be more powerful until it runs out of ammo. It deals 20 damage with direct hits for the first shot. Every orb fired increases the damage dealt by 10 points until it caps at 60 points of damage for the fifth and final orb. Source

It's the Everlasting Crown, and it speaks to you occasionally.

I am afraid it's not possible as with most titles, cross-platform play is not possible. A community manager for EA replied to a similar question to yours on their Answer HQ site: No, the game environments are separate, each system (Xbox/PS4/PC) has its own separate player pool. Interestingly, there has been some rumblings lately in the industry about cross-platform play, but we're not there yet. I suspect it won't be possible to retroactively apply even if it does become the new standard. Besides, it's unlikely that PC and console players would be put together, given the aiming advantage of a keyboard and mouse. Anyway, forgive my tangent. As mentioned above the answer is a no, sorry. Source

Xbox Live is a required service if you wish to play a multiplayer game like Garden Warfare. If you are in China, Xbox Live on 360 is not supported. You can see a full list of the supported countries/regions here: https://www.xbox.com/en-US/live/countries You can try setting your console to one of these regions to gain access to the service, but it's not something i have experience with.

The game autosaves so you don't have to save. Now I don't know if you're on console or PC but it shouldn't matter. If by this you are referring to an error message then here is a link that could help you. As for switching users on Xbox, when you are ready to switch accounts press the main Xbox button, then go to the far left to the accounts area. Click the switch accounts button and switch to the requested account. After that PvZ should recognize and switch accounts accordingly.

You can choose between different classes by scrolling left or right when picking your character on the character selection screen:

As far as I can tell, Garden Warfare 2 is only available for Windows through Origin, so you'd need an Origin gift card. In the US, you can buy these at Game Stop, among other retailers. Note that there are two editions of the game: Standard Edition, MSRP $19.99 USD Deluxe Edition, MSRP $29.99 USD

Well, when you play PvZ2 for the first time you are asked to sign into your EA account. If you don't have an EA account you can make one. Assuming you did sign into your account on your Xbox, then when you play on your PC all you should have to do is sign into your EA account. Someone has asked a similar question on the EA discussion boards.

No, you cannot play as a zombie in Split Screen mode. Zombies are only playable in PvP modes (Welcome Mat, Team Vanquish, Gardens & Graveyards, etc.).

No. There is no cross-play support for PlayStation and Xbox.

OK I discovered this finally the hard way. It's 4.

The game is running although not showing all objects as expected, so I would have thought it would be a DirectX issue. The game requires DirectX v10 (or above) so I would try ensuring that you are up to date on that front. http://support.microsoft.com/kb/179113

Change you default recording device in windows to something else another device that is completely different do your microphone, then if you still want to use skype or teamspeak you can assign a different microphone in their settings. I have this as standard just for those kind of games. Normally the developer will patch this because they will get a lot of complaints from the community

It looks like there are two gamemodes you can play as a zombie in (emphasis mine): Multiplayer Mayhem: Team Vanquish In Team Vanquish, you choose a side and join a team of Plants or Zombies. Unlike other game modes, you have only one objective: vanquish as many as you can from the opposing team! It's a botanical brawl where you don't go tiptoeing through the tulips unless you're sneaking up on someone. Multiplayer Method: Gardens and Graveyards If Team Vanquish is a free-for-all, Gardens and Graveyards is a tactical assault in which teamwork really will win the day! Play as a plant and defend your garden stronghold, or play as a zombie trying to invade and degrade it. Note: Some of the gamemodes need to be unlocked before they can be played.

It is not possible to get duplicates, so once you've unlocked everything, you just get extra consumables in packs instead of non-consumables.

Unfortunately, outside of a game there is no way to tell. When you are in a game, however, you can simply press menu button at any time to view/skip challenges by pressing Y(on Xbox versions). The amount of skips you have is also shown.