Assassin's Creed II/Sequence 1: Ignorance is Bliss

Repubblica Fiorentina – 1476

Boys will be boys
You start out talking with your friends until Vieri de' Pazzi shows up and throws a rock at you. Accept the mission and you'll begin brawling with the enemy gang. You can now punch, block, counter and grab. When grabbing, you can then headbutt (head button), punch (armed hand button), knee (legs button) or throw (unarmed hand buton). The first wave consists of four guys, after which your brother Federico will show up to join the fight. The easiest way to beat your enemies is to simply block and counter. When you've taken out enough of the second wave, Pazzi will call his boys back for a retreat.
 * Memory start: Automatic
 * Reward: 100ƒ

You need some money for the doctor, so search the downed bodies by holding the unarmed button while standing over someone. You can search incapacitated enemies whether they're alive or dead, although it's not worth it during the game as they only ever have a couple florins on them. This action is also how you loot chests, and it takes about two seconds to finish. Search the bodies around you until you've found 200 florins (they make it easy on you by putting a lot more money on these guys than you'll normally encounter in the game).

You should see the other guy
You need to follow Federico to the doctor, which takes you over a building to show you how free-running works in the game. You'll see his status indicator is blue above his head, but it's not necessary to lock onto him for the mission. Hold down the high profile button while moving to jog, and hold down the legs button as well to sprint and free-run. Follow your brother, but stay behind him and just go where he goes. If he's climbing and jumping, make sure you're holding the legs button so you'll perform the same action. Run down the street then jump across the poss to a landing on the side of the building. Climb up the building and cross the roof to the other side where you can jump down to the doctor.
 * Memory start: Talk to your brother next to the bodies you just looted.
 * Reward: -200ƒ

Sibling rivalry
All you have to do is climb the church across from you and enter the white, swirling lights on the roof. Throughout the game places where you need to be will be marked in this manner. Federico heads off to another building to jump across the roofs, but you can run right up to the front of the church and start climbing at the door behind some people talking. It shouldn't be a problem to make it up there before your brother. When you get to the top you'll follow your brother up the nearby tower.
 * Memory start: Automatic
 * Reward: None

Nightcap
You won't be able to see your next objective marked on the map until you synchronize the viewpoint in the area, so walk out onto the wooden plank sticking over the side of the roof and press the head button. When you look at the map now, you'll see the area surrounding the viewpoint has been revealed, showing your objective and a couple shops. In addition you will also see all the other viewpoints in the district. Perform a leap of faith from the tower by moving off the platform while holding the high profile and legs buttons. When Vieri and his thugs have passed, exit the haystack and head northwest to your girlfriend's house.
 * Memory start: Automatic
 * Reward: 100ƒ, Races unlocked

Pazzi's men will be marked on your mini-map with red dots, and if you go near them they will become suspicious and eventually attack you, so steer clear of them. When you get to position marked with the white lights under her window, she'll come out to see who it is. Climb up to her window when she's done talking. Once inside you'll have an interactive cut scene. If you press the buttons when indicated, Ezio will perform an alternate action.
 * 1) Press the head button to kiss Cristina, otherwise you hug.
 * 2) Press the unarmed hand button to take off her dress, otherwise you throw her on the bed clothed.
 * 3) Press the head button to make love to her, otherwise the scene cuts away.

The next morning Cristina's father finds you in bed with her and chases you out calling for the guards. You'll need to lose the guards and get back to anonymous status. At this point they're not very good at chasing you and they don't look very hard when you're hiding. Watch your mini-map as you run away and try to get outside the yellow circle you see, which indicates the area where they're actively looking for you. The blue dots on the map, which only appear when you're being chased, show you where good hiding spots are, such as hay carts or benches. When you've either spent enough time in hiding or enough time outside their search radius, you will become anonymous again and the mini-map will lose the yellow or red ring around it.

Paperboy
This is a simple delivery mission where you take your dad's letter to Lorenzo de' Medici. Whenever you get a letter in the game, you can read it in the Database. Your destination is in a little courtyard to the southeast of your house. The alleyways leading into the courtyard are guarded by Pazzi's men, so if you don't want to fight them, you can get in from the roofs above. Either climb down a ladder on the side or jump off the edge into the hay cart. You'll see a man highlighted in white at the west end of the courtyard. Talk to him to deliver the letter, then return home to let your father know Lorenzo is out of town. The door to your house will be highlighted this time, and you can press the unarmed hand button to interact with it.
 * Memory start: Talk to your father in front of the Auditore house.
 * Rewards: Courier assignments unlocked

Beat a cheat
You'll need to find your sister's boyfriend Duccio and beat him up for her. He's in the northeast part of the district, talking with another woman on the south side of the Santa Maria del Fiore. When the you walk up to him in the cut scene, there's an opportunity to get a quick punch in with the armed hand button. When you have control, beat him senseless.
 * Memory start: Talk to your sister in the garden in front of your house.
 * Reward: 100ƒ, Beat up events unlocked

Petruccio's secret
You'll have three minutes to collect three feathers for your brother. Start out by climbing the barrels with the white sheet over them right next to him up to a landing then over to the roof with the feather he was pointing to in the cut scene. Follow that roof around to some wires crossing the courtyard to another roof, then climb up and head west across the roofs to the next one. Keep following the roof around to the south and pick up the last one before heading home. Once you have the third feather you're no longer timed, so go back to your brother any way you like. The three feathers you collect don't count towards the feather collection.
 * Memory start: Talk to your brother in front of your house.
 * Reward: 100ƒ, feather locations unlocked

Friend fo the family
In this simple mission you follow your mother to Leonardo da Vinci's house and then carry back some of this things. If you get too far away from her, you'll get a warning message to close the distance. After meeting Leonardo you'll walk back to your house. Pick up the box with the unarmed hand button and lead the other two back to your house. They'll follow you even if you run, so there's no reason not to. If you alert Pazzi's men along the way, you can still drop the box in front of your house, but you'll need to deal with them and regain anonymity before ending the memory.
 * Memory start: Talk to your mother in the garden in front of your house.
 * Reward: 100ƒ