The dark reaches of this Forest world are unknown to mortals. Rumors and fables abound. Most of what is known comes from the tales told of the ancient time when chaos rules. The clue is in a treasure chest.
Level 20
The chest in the bottom left corner contains Death.
Level 21
The bottom left corner exit leads to room 23. The top right leads to room 22.
Level 22
Note the extra attack potion upgrade in the southeast. The box in the top left corner contains poison; save your key.
Level 23
Level 24
In all treasure floors of this world, the wall below an array of 18 treasures can be broken for 6 more, and the cross on the right has more treasure boxes.
Level 25
The bottom exit leads to room 27. The top exit leads to room 26, the Clue Room.
Level 26
This is a Clue Room with a timer. The locked chest holds the clue. Hold right when using the teleporter to exit to room 27. Among the numerous lone false blocks in this room is one that will reveal an extra armor power-up.
Level 27
Level 28
Level 29
Level 30
Both upper exists skip room 31 to lead to room 32. The lower left exit leads to room 31; the lower right exit skips rooms 31 through 33 to lead to room 34.
Level 31
Level 32
Level 33
Level 34
The bottom exit leads back to room 30. The top exit leads on to room 36.
Level 35
Level 36
Level 37
Destroy the walls a single shot at a time to avoid accidentally destroying the extra speed potion upgrade, the most important upgrade of all. By the end of this level, you should have all five upgrades (levels 12, 15, 16, 22, and 37). It's best to play 1 player at least up to this point so you don't compete for the extra upgrade potions.
Level 38
The upper right exit takes you to 40. Thus you miss room 39, which has a speed upgrade potion.
Level 39
There is a speed upgrade in this room as well as in room 37.
Level 40
Forget the first chest which contains poison, but open the upper right one for a potion.