Heroes:

Secret Hero Tip:

Ride the highest Coaster with Torb

Extra Heroes Tips:

Ashe: Zone 3
Illari: Zone 3
Hanzo: Zone 1
Freja: Zone 2 -> Statue
Doomfist: OOB

Extra+ Heroes Tips:

Soldier: 76: Zone 4
Sojourn: Zone 3
Genji: OOB
Moira: HIDDEN near Zone 3
Lúcio: Zone 1

Easter Eggs Tips:

Junkrat: OOB (See from Zone 1)
Sombra: HIDDEN near Zone 1
Juno: Zone 1 -> 2
Widowmaker: Zone 3
Pharah: Zone 2