A step up from the original - whilst the inconsistent difficulty remains, the puzzles are more creative and finding secrets is more rewarding.
The ending is pretty interesting as well, setting the scene for a much more impactful ending in NG Pass 3. I'm not gonna spoil it here - if you wanna know, reach the end yourself.
If you get stuck at any point, here's the answers and secrets:
ANSWERS:
31) php5a
32) peas
33) pudding
34) ant
35) face
36) bench
37) grant
38) opaque
39) paper
40) [NO PASSWORD - CLICK HOLE IN CLEAVER OR "JACK IN!" WITH PASSWORD BOX EMPTY]
41) vacuum
42) nectar
43) rabbit
44) shelter
45) end
46) treekeepers
47) sad
48) 19
49) act
50) 495
51) norton
52) charlie
53) gravity
54) citadel
55) cookie
56) grape
57) sinerider
58) bizarre
59) teddy
60) [NO PASSWORD - CLICK RIGHTMOST CROWN]
SECRETS:
SECRET 1) Press TAB, then click the face's right eye. Warps to Levels 36-38.
SECRET 2) In Level 34, click the skull in the bottom right. Warps to Levels 35-37.
SECRET 3) In Level 47, click the glove. Warps to Levels 48-50.
SECRET 4) In Level 58, click the face in the top-left corner. Warps to Level 59.
SECRET 5) In Level 60, click the middle crown. Warps to any level in the game.