That's an interesting trick, but I wonder if you could keep the chain going? if the enemies are close enough could it be possible? Although it would only save a few seconds altogether.
Yeah, the double kill is a common knowledge between the veteran players of this game... It surely could save some seconds alltogether, but when you double kill, you use whether a gun bullet, or a throwing knife depending are you using the sword or the dagger. Those spplies are pretty limited when you speedrun, because looting/buying more of them takes more time than the double killing saves... BUt in some selected places if the ranged weapon management is good enough it could make things faster... For example say... In the Castello Crashers you could throw two throwing knives at those two guards in front of Caterina's cell... but again, it maybe be anly a second faster than killing them individually with the hidden blade...
About the Assassin's Recruits again. You are forced to visit a pigeon coop and the map at the Tiberius hideout 2 times in the game. Should the recruits put to a mission at the first pigeon coop so they would be at least a bit tougher at the sequence 8 when I need them most against the allmighty brutes. If one is a quick thumbed, it should not take more than couple of seconds, and they should be back in the beginning of sequence 5 when thay are needed in the senator misson. And if you want to live risky, they could be put to a mission with 50% success for more exp... But then again, they would not level up more than one level still...
About the Assassin's Recruits again. You are forced to visit a pigeon coop and the map at the Tiberius hideout 2 times in the game. Should the recruits put to a mission at the first pigeon coop so they would be at least a bit tougher at the sequence 8 when I need them most against the allmighty brutes. If one is a quick thumbed, it should not take more than couple of seconds, and they should be back in the beginning of sequence 5 when thay are needed in the senator misson. And if you want to live risky, they could be put to a mission with 50% success for more exp... But then again, they would not level up more than one level still...