Enter these level-codes:

first
cool
forest
insects
shape
force
ransom
darkness
tunnel
coarse
falcon
eagle
fortress
shiny
maximus
boards
molly
burning
broken
flame
magic
foilage
strange
grave
center
puzzle
loom
diablo
lucifer
judgment
worm
switch
bubbles
crush
spider
brick
lowrider
icy
goldvein
merge
smithy
flip
strong
looping
washer
digger
yard
machine
camping
happyend