Hint :
Tip: Tag carefully. The more tagging you do, the more police will come out and try to stop you. To make life easier, tag the harder-to-reach and larger spots before doing the simple ones, because they're easier to do when you're being chased.

Tip: If you can't find a red arrow to tag, pause the game and refer to the map to see what you've missed. In some cases tagging spots are above or below ground.

Tip: When things get hectic, remember: you're invincible for a few seconds when you dash using the trigger.