If you are stuck, you are likely encountering one of two specific bugs. Try the solutions below before reinstalling the game.
This issue is often caused by the game's engine tying input detection to frame rates; at higher FPS, the game expects a humanly impossible number of inputs per second. Proven Fixes for the Bellec Fight Bug Change Aspect Ratio & Resolution : Set your graphics to a 4:3 aspect ratio assassin 39-s creed unity sequence 7 memory 3 bug fix