Secretz

X Y Secret Type Description of the location
6 15 Question Mark Switch #1 In plain sight in the southwest corner of the first stage area.
You will need to be really quick, to make use of this Secret!
It createz a path to a Coin (#1) and (very necessary) an exit so you may continue play.
62 8 Question Mark Switch #2 In plain sight in the south central part of the third stage area.
It createz a path to two Coinz (#2 and #3) and (very necessary) an exit so you may continue play.
16 30 Question Mark Switch #3 In plain sight in the area bounded by Purple Pyramidz (PP) and Construction Pyramidz (CP).
It changez some CPz into Arrowz , showing you where to go.
You will acquire three Coinz there (#4, #5 and #6).
66 33 Red Warp (RW) #1 The SecretTeleporterTrigger is a (lowered) Black Pyramid (BP) "pointed to" by an Arrow near the exit Blue Wormhole (BW) from Stage 4.
The RW will open two stepz west, north of the BW .
The RW will take you to the area where there you may acquire Coinz #7 through #11.
19 51 RW #2
When a Giant Mushroom

is broken, the Warpstone Piece is revealed, with the SecretTeleporterTrigger in the southwest corner.

The RW will open where it is impossible to go without teleportation.
(Grunt #3 is teleported there, and must survive in order to achieve the "PERFECT!" score.)
If he survived, the RW would take him to northwest (but outside) of the area where the Warp Letter is located, and he will work his way toward a Black One-Time Switch (BOTS) near the King's Fortress.