Surf on the enemies in the air Have a "critical pain" to your enemy while you are on the roof of a building (to make it fly), jump and hit him while flying for a good "ride"on the body of the victim.
Destroy military bases When the alert level is the highest point of the enemy, run up the roof of a building near the military base and dive on it using their muscle mass. The base will be destroyed and the alert level will reset.
Evade enemies When the alert level is the highest point of the enemy, "sucked" any person, throw in the sea and quickly changing your appearance. You will go back on dry land and you will suddenly get the alert level of the enemies.
Surf vertical You may not know, but you can come down suddenly from the buildings by a sort of vertical surfing on their walls.