Rain on Your Parade

Never mind, finished that today.

Just gotta use the big drops to extinguish the initial fire as fast as possible and just restart if it spreads too much not that this is helpful anymore since you already finished it

How do you get into the castle gates on the level where the dragon needs your help?

Drag the cannon from the beginning to the gate and it will fall (Thanks Zalexzy & Stony99)

I feel dumb, but how do you launch the roller coaster in the amusement park level?

Like everyone else, ask a question here, figure out the answer. For my question, use snow to ice enough of the track to speed it up enough to launch.

I can't find the damn donut in the shopping centre..

It was in the pet store after you free all the dogs, by the entrance to the store. It has a pink aura around it...

From what I see all DLC levels have at least 1 Star! Not sure what I’m missing?

Had this glitch for me (I think - maybe I was actually missing a mandatory star from a DLC level?), but I deleted the save data from the in-game options which reset my progress but retained the "mega droplet" power that the DLC unlocks (not sure if this itself was a bug), ran through the base game really quickly doing only the mandatory levels, and then repeating the DLC levels all in one sitting. It's really not time-consuming when you know what you're doing and only attempting the mandatory stars. On this second attempt it finally popped. Hope this helps someone in the same predicament.

For any1 in the future reading this because your achievement didn't pop, just reply the level SAIL and complete the 3 chests quest. I only destroyed the ships for another achievement, finished the level and moved on. You actually need to do the 3 chests quest