Assassin's Creed II
50 Achievements
1,000
Sweeper
Sweep 5 guards at once by using a Long Weapon.
10
How to unlock the Sweeper achievement in Assassin's Creed II - Definitive Guide
Go to Special Moves, Long Weapons. It will cost 10,000 Florins.
You will just need to get several guards to attack you, the more the better, then hold , and release to sweep all around you.
It helps if you hold longer so you spin your sweep in 360 degrees around you. As opposed to the shorter press, which just sweeps the guard in front of you.
Have a look at the video for some help.
Video is not mine, credit goes to MrBlingBlingNr1 on YouTube.
Credit goes to : Titan Eric from Trueachievements
You can unlock this as early as DNA Sequence 6. The Sweep attack is learned from the fighting trainer in front of the villa in Monteriggioni. Speak with him and navigate to Special Moves > Long Weapon. The cost of this training is 10,000f.
When the training is over and you have learned the move, while traveling in any city, locate a brute guard with a spear (Venice is the best as there is a guard with a spear walking near the fast travel station in the San Marco district). To get his attention, select fists () and punch him then start running for the restricted area. In the confrontation, hold and press at the correct time to disarm the guard. Keep backing up so other guards enter the confrontation (if you run, you will drop the spear. Press to pick it up again). When there are more than five guards surrounding you within arm’s length, hold and release to perform the sweeping attack. If five or more guards fall, the achievement will unlock. This may take a couple of tries to get.
Thanks to 360walkthrus for the video:
To gain the ability to use a sweep attack you must talk to the trainer near your stronghold. From there go to special moves and then to long weapon. Complete the training and you will gain the ability to use the move. Once you've learned it go to any city and keep any eye out for a solider with a long weapon such as a spear. Once you see one disarm him so you get his weapon. The get a big group of guards in front of you and use your sweep attack by holding in the button. This one may take a couple tries but after you get the hang of the move you will get it in no time at all. Below is a good video of how it's done (credit to PowerPyx).
Video tip.
3 memory
Before the opening of the 3rd last prison
take the spear, stop your gang, and run around the area, collect juggernauts and ordinary guards, go into a narrow alley and you can pinch
Even if not everyone died at once, this is good, there is time to charge the reception