|Stage 4 is an ice cave, with water dripping from the ceiling that temporarily makes the ground slippery. If you slide on a slippery surface with the astronaut disguise you can get flung across to certain areas that you otherwise can't get to. The map is a bit confusing but not as much as that museum level was. The enemies here include some infinite respawning water bubble enemies that work like boos. They are very annoying to deal with.|
This is the level where you finally gain the dragon disguise, that lets you breathe fire and destroy the fire blocks that I've been seeing everywhere since the first level. You also gain an upgrade for the Artist form that lets you set three blocks at a time, which is another huge game changer. Also that upgrade lets you spawn heart refills by drawing a heart shape. It seems really cheap, but it's kind of difficult to draw a perfect heart and you wouldn't be able to do it in a situation where you are being attacked. Also this level makes use of the Captain disguise a lot more, and every level up until now has made a lot of use out of the Genius and Artist disguises. The astronaut laser power is still being used for some parts as well, such as when there are chandeliers that you can shoot to lower them and use them as platforms.
And with that I now have every disguise power, according to the transformation icon slots in the upper screen. I'm not gonna bother going back to 100% clear the earlier levels cuz that seems pointless. I'd rather just keep going and see what ending I get when I don't replay any levels. I'm pretty sure I've been getting all of the treasures you could possibly get except for the ones that require an ability that you don't have yet, that's good enough.
The story actually gets a bit more interesting here... Wario still thinks that Cannoli (the rival thief that originally had the transformation wand) is the one who took the wishstone tablet from the museum, but then it shows a scene where Cannoli is following behind Wario, and he says that he wasn't the one who took it, so there must be a third thief that's after the wishstone. Wario meets this third thief, Carpaccio, at the end of this level, and he fights you in a boss battle that is much harder than anything else in this game up until now. I actually got a game over on this a couple times.
This boss battle takes place in a giant water balloon where the boss floats in the middle, and Wario can rotate the boss and the room around by moving left and right. The boss sends out two water balls to attack you with, and you're supposed figure out which one to shoot with the laser and if you shoot the wrong when you get damaged by an explosion. I couldn't really figure out which one to hit so I just had to guess. To damage this boss you have to turn into artist Wario and draw a block on one of the switches in the middle, but you have to rotate the room at the right angle and also must do it quickly enough so that he doesn't send out another attack at you while you are still drawing.
I managed to beat this boss using guesswork, but I later found out from a guide that you're supposed to use the Genius form to see which ball is the one you're supposed to shoot. I guess I didn't notice that icon...