Assassin's Creed Syndicate

- Usual advice of synchronizing with viewpoints ASAP.

- Ignore side missions until you get the zipline, it's pretty useful, you can get it early, and makes moving around much more enjoyable. You need it to grab some collectibles as well..

- Enemies have levels. Try to keep your skills and equipment more or less up to date and do the lower level neighbours first, otherwise the enemies become massive slabs of HP.

- You can make good money quickly by hijacking carts that spawn near your delivery point. It'll take a bit to unlock, though. I think you have to do a mission for the lady dressed as a gentleman to unlock the activity first.

- Stealth skills make a difference, same with skills that cause more damage to enemies. Tool skills are less useful unless you're going for style points.

- The skill that prevents enemies from aggroing and the one that lets you loot people you assassinate automatically are huge QoL improvements.

- Getting X number of kills in a particular way will give you a permanent perk. You can check what the requirements are somewhere in your progress menu.