Story-Related: Can't be missed. Unlocks in the loading screen for the following stage: Looking Glass-Land.
Wonderland Woods is the fourth area of the game and also the longest stage (reference: Alice wikia).
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Walkthrough Tips: Spoilers ahead
Dry Landing--Save often-there are a lot of parts where a missed jump is common--the game seemed to love dropping me from the ropes (or perhaps I'm just bad at things).
Herbacious Border--After the rabbit gets crushed, turn left and fall into the hole. Make use of saves--there are points where the fighting is incredibly hairy--and sometimes even avoidable by taking another tunnel. Fairly easy though.
Rolling Stones--easy level, just keep running and when you get to the ice, either dash across before the rock shatters it, or move slightly right and cross by jumping afterwards.
Icy Reception--make sure to grab the Ice Wand in the first main cavern because it makes fighting those damn screaming ghosts a breeze (and basically everything else in the game too). Escape the second boulder the way you did the first.
Fungiferous Area--easy level--just don't get eaten by any mushrooms--they tend to pass you back and forth amongst them--killing you slowly but surely if you get caught. I saved my manna by using the vorpal blade's secondary (y) attack and taking it easy.
Centipede's Sanctum--boss battle--he is only vulnerable when he rears back--hit the exposed red spot on his thorax when he does. If you can chain a good few hits you can basically lock him into a constant loop of suffering your damage until you run out of manna. Kill the headcrab things he spawns or pick up the health containers located around the arena for more.
Caterpillar's Plot--Grab the first piece of the Jabberwocky weapon early-on, there are three tunnels here and I believe you only have to visit the first two--the third has a ridiculous battle as I remember and is good to be avoided for now ;)
DONE