Replace CMD with CTRL for Windows.

General

•  cmd + k = shortcut menu
•  cmd + f = search
•  cmd + \ = chat

Formatting

•  cmd + b = bold
•  cmd + i = italic
•  cmd + u = underline
•  cmd + e = highlight 

Editing

•  enter = line break / new task
•  tab = indent task / move right
•  shift + tab = outdent / move left
•  cmd + enter = complete/uncomplete a task
•  cmd + shift + delete = delete entire task
•  cmd + up/down = collapse (fold) or expand (unfold) a task with sub-tasks
•  @ = mention
•  # = tag
•  up / down arrow = navigate up and down
•  backspace = delete text or entire task
•  left / right arrow  = navigate left and right

Views

•  cmd + " = open view menu
  •  L = List View
  •  B = Board View
  •  A = Action View
  •  M = Mindmap View
  •  O = Org Chart View
•  cmd + shift + >/< = toggle views forward and backward