This one is easy. The start to this mission is easier than any other one.
right off the start you take a few steps forward until you see a small little village and your target. You just run straight to your left behind some buildings and just keep moving up as your target walks along the path. Once there is a bend in your targets path you have to jump in a bale of hay where a guard is standing. He has his back to you so just run and jump in the hay and while in there press x to kill the guard. The guard patrolling around you will walk away and once he does jump out of the hay, pull out your crossbow and kill the guard on the roof. run behind that building and then when its safe, follow your target. At the top of the hill jump in the hay, once your target enters to building you have to run over to the right corner where you will see some boxes. climb up the boxes and jump onto the rope that will swing you around to the other side. just keep hopping from each piece of wood to the next until you get to the hole in the wall. Climb onto the big hole and the time will stop because your target is just down and to the left. Wait for his buddy to leave and then just jump down and beat him up.
The rest of this mission is kind of hard to explain. I turn around and run and hop over a brown fence and climb the big building to my left and hop onto the wood pieces. Hop across those and jump onto the small roof. keep going straight and jump off the roof onto more wood then jump down and get the plans.
After you get the plans turn around, climb up the building right in front of you and kill the guard. (preferably with your crossbow or something quick since you need to use your crossbow right after). You have a few seconds before a guard to your left on another building sees you. Pull out your crossbow and just shoot him. Jump down and let the prisoners free.
Follow the prisoners and kill all the guards that attack you. i like to use my double hidden blades since i cant seem to revers the big guys with a sword but i can with the blades. I also noticed that the dude you beat up says they captured three prisoners but right now after killing two groups of guards i only have two? So i dont know if one died or they messed up but if he died then dont worry if you lose one because it doesnt seem to matter. The prisoners lead you down to a closed off well. Press b to open the well.
Now you have to open the gate for the guards. Climb the left side of the wall and run along the beams. be careful, the beams switch sides so dont miss. turn to your right once you have gotten past the beams and click b on the wall with the wheel. Do a 180 degree turn and run up the wall with the boxes. Once again hop/swing across the beams and then take a right and hop your way down. The beams switch sides again so be careful. if you fell like i did, swim back and there will be a treasure chest. climb up the wall and try again. once you get across just open the gate.
To lower the bridge go into the bridge room and take a left. Up on the wall there is what looks like a ladder, climb it obviously. Climb up until you cant, shimmy to your right and go around the corner. Once you cant move anymore jump backwards onto the ledge. Jump across the beams and jump down, lower the bridge with the wheel in the wall.
Theres a nice save point and cut scene there and you find the tank. ugly lookin tank though. Shoot the door to get out. Shoot all the cannons before the shoot you, it also helps to shoot all the guys as well. Did i mention that you CAN run over people? When you turn the one corner you will see two cannons very close and one to the right. Shoot between the close cannons to get them both and then just shoot the other one quickly. You will end up fighting another tank. i got 5 shots off before he even shot once. They show where theyre about to shoot so just move and then shoot him and he will die on the 5th or 6th shot. keep following the path and shoot down the gate. now youre in a base with two tanks. dont drive right at them or they will hit you, just move in a weird motion that isnt straight and keep shooting and you will be fine.
there you go, the easiest of all the machine mini missions. Sorry if this was worded horrible or didnt make much sense. Was typing it as i was doing it my first try.
Please leave a note as to why you vote negative if you do so i can work on my solutions :)