A number of upcoming games have had their achievements leaked over the week, namely "Call of Duty: Ghosts," "Assassin's Creed 4: Black Flag," "Batman: Arkham Origins" and "Lightning Returns: Final Fantasy 13."

Get ready for spoilers on some missions and activities that can be found in the mentioned games.

'Call of Duty: Ghosts'

Polygon has found that Exophase already posted the achievements for "Call of Duty: Ghosts," and it contains a pretty extensive set of missions that you need to accomplish.

The range of tasks are pretty wide, from a simple mission to get your first enemy kill in the game, which will merit you the Spatial Awareness badge, to finishing a mission without breaking your stealth mode for the Jungle Ghosts.

You will also have to explore the new terrain missions, with achievements like Into the Deep, where you need to complete the level, going to the enemy space station for the Loki, using missiles to take out the enemy choppers in Fly-by-wire, and confronting Rorke for The Ghost Killer.

At the end, you will receive the Mask and finish the campaign with the title of Veteran. Check out the full list of achievements and get ready for the game when it releases on Nov 5 for the Xbox 360, PS3 and Wii U and later for the next-gen consoles.

'Assassin's Creed 4: Black Flag'

"Assassin's Creed 4: Black Flag" may be releasing for the PS3, Xbox 360, Wii U, next-gen PS4 and Xbox One, but those playing the game on the Xbox 360 may have a head start in knowing what they will encounter and conquer in order to push their Gamerscore even higher.

Xbox 360 Achievements already leaked out a number of these achievements. There are 13 memory sequences that you should complete. There are also easier missions to accomplish like killing a guard ringing a bell, unlocking the secret door in Tulum, crafting a Hunter outfit, finding a buried treasure and killing four enemies in a row with multi-pistols.

The achievements also entail that you explore the world, which will give you the Cartographer badge, recruiting 500 crew members to set sail, check out the underwater shipwrecks, complete all 25 Abstergo challenges and complete all activity in a single location.

The complete list of achievements is in this link. "Assassin's Creed 4: Black Flag" will set sail on Oct 29 in the U.S. and Nov 1 in the U.K.

'Batman: Arkham Origins'

Originally, when "Batman: Arkham Origins" was announced, a total of eight enemies were reported to be included in the game. As the release date nears, the remaining enemies have finally been revealed via the leaked achievements list.

Uproxx reports that Lady Shiva will be an assassin in the game. Riddler has already been announced, alongside Copperhead, Deathstroke, Firefly, Anarky, Bane and Mad Hatter.

But IGN also revealed a number of villain names, like The Penguin, Black Mask, Deadshot and The Joker. These names coincide with some of the achievements leaked. You need to defeat Deathstroke for the "One eye open," defeating The Joker with "Perhaps sooner, Perhaps later" and scan 20 Anarky tags in "Voice of the People."

Check out the link for the complete list, but beware of spoilers for a number of activities and missions.

'Lightning Returns: Final Fantasy 13'

The Xbox 360 Achievements for Square Enix's upcoming "Final Fantasy" game was leaked way before the actual release date of Feb 12, 2014.

The list from VG 24/7 shows a mix of secret achievements, unlockables and recognition. Some of these include a proof of expertise in various fields, including Swordsmith, Craftsman, Synthesist, Stylist and Shieldsmith, as well as the title of Novice for the likes of Swordsmith, Shieldsmith, Craftsman, Artist, Stylist and Synthesist.

The achievements also hint at some of the activities in the game, including at least 25 side quests that you can embark on, riding the great monorail lines, building bridges and customising your character's outfit.

RELATED STORIES