The DLC will be available from December 20th, just in time for Christmas.

The tweet read;

Brand new DLC coming December 20th with all new Batcave. Jokers carnival and the iceberg lounge also available to download then!

And that’s about all we know right now, no price was released alongside the tweet but when more information is released we’ll be sure to update you!

Act quickly as the sale only lasts until the 27th of November, which is tomorrow!

Batman: Arkham Asylum GOTY (PC) – 33% off – £6.69
BioShock 2 (PC) – 33% off – £9.27
Bulletstorm (PC) – 50% off – £14.99
Dawn of War II (PC) – 50% off – £9.99
Chaos Rising Expansion in Dawn of War II (PC) – 50% off – £9.99
DiRT 2 (PC) – 50% off – £7.49
DiRT 3 (PC) – 50% off – £14.99
F1 2010 (PC) – 50% off – £9.99
F1 2011 (PC) – 25% off – £22.49
Fable III (PC) – 33% off – £20.09
Traitor’s Keep in Fable III (PC) – 33% off – £3.15
Fallout 3 (PC) – 50% off – £7.49
Broken Steel in Fallout 3 (PC) – 50% off – £1.99
Mothership Zeta in Fallout 3 (PC) – 50% off – £1.99
Operation: Anchorage in Fallout 3 (PC) – 50% off – £1.99
Point Lookout in Fallout 3 (PC) – 50% off – £1.99
The Pitt in Fallout 3 (PC) – 50% off – £1.99
Fallout 3 (PC) Game of the Year Edition – 50% off – £9.99
FlatOut Ultimate Carnage (PC) – 50% off – £8.49
FUEL (PC) – 50% off – £3.49
Grand Theft Auto IV (PC) – 33% off – £13.39
Grand Theft Auto IV (PC) Episodes From Liberty City – 33% off – £13.39
Grand Theft Auto IV (PC) Complete Edition – 33% off – £16.74
Operation Flashpoint: Red River (PC) – 50% off – £12.49
Red Faction: Guerrilla (PC) – 50% off – £7.49
Section 8: Prejudice (PC) – 33% off – £6.69
Overdrive Map Pack in Section 8: Prejudice (PC) – 33% off – £2.67
Vancouver 2010 (PC) – 50% off – £9.99
Virtua Tennis 4 (PC) – 50% off – £9.99

Warner Bros. and Rocksteady’s follow-up to the hugely successful Arkham Asylum was launched on consoles back in October to rave reviews, but PC owners have had to wait patiently since then, presumably while Rocksteady have been adding one last layer of polish to the game.

As well as the PC version arriving this week, the Robin Bundle Pack DLC has also launced on XBox Live and Playstation Network. Brandishing his own set of gadgets, Robin can be used to play all of the existing challenge maps, as well as two new maps included in the DLC. The Robin Bundle Pack is priced at 560 MS Points / £5.49.

After the events of Batman: AA, the island asylum is declared unfit for purpose, and somehow Hugo Strange has convinced the city of Gotham, that a mega-prison is their only hope of containing all the criminal scum in the city. Instead of being locked in cells, prisoners are left to wander the streets of the city and have full reign to cause as much chaos as they can manage.

It’s this city that Batman is thrust into and he’ll face off against Hugo Strange, the man that knows Batman’s true identity, and a whole host of villains and criminals looking to carve a name for themselves by taking down the famous Batman, all the while uncovering a sinister plot at the heart of Arkham City.

Arkham City is not just an exceptional sequel, but without a doubt the best super-hero game of all time.

The plot unfolds at a steady pace and takes the player on a rollercoaster ride for over eight hours, if you’re playing through the story and don’t become too distracted by all the extras. Despite the vast amount of villains in the game, it never feels overloaded and forced. Each of the gangs are led by the likes of Two-Face, The Joker and The Penguin, and their individual sub-plots are well-written and involving.

If you’ve purchased the game new you’ll get hands-on with Catwoman, who has her own storyline and relationship with the villains of Arkham, being that she frequently toes the line between good guy/bad guy, but there is always a desire to get back into the boots of the Bat as it feels almost alien playing as Catwoman due to the slower pace of movement.

The voice acting is superb, as expected, and the inimitable Mark Hamill returns for his last outing as the Joker. There’s never a dull moment in any cut scene as the dialogue is delivered with intent and care by every actor. Since this is Rocksteady’s take on the Batman universe, The Penguin is a different beast altogether and doesn’t quack-quack like his 60s counterpart, but instead has a heavy cockney accent, which as odd as it seems at first, is quite fitting in this dark and realistic vision of Gotham.

Batman himself has picked up a bit of attitude since the first Arkham, and he spouts lines about breaking bones and people eating their food through a straw. His lines have been revamped since the last game, and there is a much darker side of Batman on display.

The plot unfolds at a steady pace and takes the player on a rollercoaster ride for over eight hours, if you’re playing through the story and don’t become too distracted by all the extras.

While your journey through the city, you’ll be accompanied by the sound of your grapnel gun and the conversations of criminals and political prisoners below on the city streets. The music is dark and brooding and it only really kicks in when it’s needed for dramatic effect during combat and it enforces the sombre, drastic and dangerous tone of the game.

Arkham City uses the Unreal 3 Engine and it really pushes the tech to its limit without every feeling like it’s at breaking point. The Gotham City skyline is fantastic, and though the draw distance doesn’t incorporate the largest of vistas, there’s a real sense that this is an organic breathing city and every district has a unique look and feel that fits with the motif of each super-villain.

Combat and exploration were the real meat and bones of the original and they return in greater scale. Whilst the core mechanics of the free-flow combat remain as satisfying as the original, there are a few tweaks that make it a more enjoyable experience. Quick-fire gadgets add an extra layer to combat that really lets the player mix things up, keeping foes at a distance, stunning them or bringing them in close for a knockout bat-clothesline.

New enemy types provide opportunities to take full advantage of every move and gadget and none of your abilities feel tacked on and useless, making earning XP from combat and exploration an essential part of the overall experience, as unlocking new moves and gadget upgrades further enhances your ability to mash the opposition into a pulp.

Don’t miss out what is probably 2011s Games of the Year.

Given that Arkham is walled off part of Gotham City, it’s a veritable playground open to exploration. There are now many ways to handle travelling between objectives, combat and stealthy takedowns. The grapnel gun allows the player to grab ledges and vantage points to escape a losing battle, survey your surroundings and prep for combat. Used in conjunction with the gliding ability, making your way round the city becomes a simple task, and indoor areas are handled in a familiar way utilising gargoyles, grates and cover.

Stalking your prey remains identical, with the usual assortment of silent takedowns, glide-kicks and vertical takedowns on offer, but in the open streets of the city you’ll find that all out ass-kicking is the order of the day.

There are hundreds of Riddler trophies and riddles in the city, all providing XP and access to Riddler side missions. The obsessive collectors will be happy with the amount of tasks on offer, and returning to areas with new gadgets becomes commonplace. Finding each of the riddles and trophies is made easier if you can manage to track down Riddler informants and beat the information out of them.

After completing the game, there are challenge modes to complete, a game plus mode and the chance to free-roam to clean up all those side missions and trophies you may have missed, so the game keeps on giving. On top of that, Catwoman is playable in the challenge rooms, with more characters on their way as DLC.

If you’ve purchased the game new you’ll get hands-on with Catwoman, who has her own storyline and relationship with the villains of Arkham, being that she frequently toes the line between good guy/bad guy.

Playing through the game will net you around half of the achievements on offer, with side-missions and combat challenges boosting your score throughout the campaign. The rest of the points come from being a completionist and performing exceptionally well in the Riddler’s Revenge challenges.

Arkham City is not just an exceptional sequel, but without a doubt the best super-hero game of all time. Developers should take note, as the pacing, dialogue and story are phenomenal and the action is superb. The new setting opens up the world, and allows players to feel a natural progression from the Asylum to this open world and every little addition to the game just feels right. With around 10+ hours on the campaign and 20+ for all the extras, this is the one game where players can truly feel like the bat. Don’t miss out what is probably 2011s Games of the Year.

Other notable new-entries include Football Manager 2012 (no. 3), The Sims 3: Pets (no. 6), Rockstar’s Game of the Year edition of Red Dead Redemption (no. 36) and Dance Central 2  (no. 40)

Here’s the top ten:

1. Batman: Arkham City
2. FIFA 12
3. Football Manager 2012
4. Forza Motorsport 4
5. Just Dance 3
6. The Sims 3: Pets
7. Pro Evolution Soccer 2012
8. Rage
9. Zumba Fitness
10. Gears of War 3

October 21 is when the console version will be released while November 18 will mark the release of the PC version.

According to almost every video game critic on the internet the wait is almost definitely worth it.

Catwoman will appear in the game as normal, but only as part of the main story. If you don’t have a code and wish to play these missions, then there will be a pack to download from the Xbox Live Marketplace or the PSN from launch. Add this to the previously announced Nightwing bundle, and Arkham City has possibly secured a decent amount of longevity.

But what does this pack do? It allows you to use Nightwing as a fully playable character across all challenge maps available. The pack also includes two new maps; Wayne Manor and Main Hall.

Nightwing has a host of new gadgets and special attacks and an “Animated Series Nightwing character skin”.

For those who do not know Nightwing, he is not as you may assume, from the Batman comics. In fact, he’s from the Superman series. Considered to be the Batman of the Superman world, the latest person to play Nightwing is in fact Clark Kents (Superman) son, Chris.

A similar pack will be released for Robin for the same price on November 22nd.

This information was confirmed in June yet we have yet to see any gameplay of the Boy-Wonder until today and I must say, I am impressed.

Robin takes on the goons by tearing them backwards through windows or beating them with his trusty staff.

The gameplay trailer is short but sweet and definitely makes it’s mark.

The pre-order pack also comes with two challenge packs as well as Robin himself, be sure to check out the video below.

Click here to view the embedded video.

You can now purchase Batman: Arkham City clothing and accessories for your Avatar in the Marketplace ranging from 400 to 80 Microsoft points.

You can buy the full body suits of Batman, Robin, Cat-Woman, The Joker and Harley Quinn for 400 Microsoft points each (gender specific and pictured below).

If you’re just looking to pick up a non-gender specific T-shirt you can choose from one of the five shirts below each at 80 Microsoft points each.

Finally, you can buy a slew of accessories including a Bat Signal, Robin’s staff, Bane’s mask and more, prices vary. For the full list of items and prices be sure to check out the Marketplace page here.

Arkham City is out in stores in just two weeks; October 18.