I've an issue completing these:
The Mushroom Zombies seem to spawn only in above ground Mushroom Biome, I've never seen one underground. You also need to either wait for night or force it with Graveyard.
I also don't remember ever seeing a Mushroom Skeleton, but I've the entry.
The other evil Mimic means you have to infect a part of your world and cross your fingers for one to spawn. Graveyard could be a better fix here, allowing the other evil Mimic's key.
And the hardest so far - the 3 costume Halloween Skeletons. Since Halloween is in HM, that means Cavern Skeletons are replaced by Armored and Archer versions most of the time.
So you have not only win (wave 15) the Halloween event, you have exactly one day to find all 3 costumed skeletons (which replace only pre-HM skeletons), which is very frustrating.
Also, good luck getting a Windy Day and have it spawn the Angry Dandelion in HM. Yes, it's available in pre-HM, but it's so overtuned in Master Mode, you don't wanna fight it at all.
The Mushroom Zombies seem to spawn only in above ground Mushroom Biome, I've never seen one underground. You also need to either wait for night or force it with Graveyard.
I also don't remember ever seeing a Mushroom Skeleton, but I've the entry.
The other evil Mimic means you have to infect a part of your world and cross your fingers for one to spawn. Graveyard could be a better fix here, allowing the other evil Mimic's key.
And the hardest so far - the 3 costume Halloween Skeletons. Since Halloween is in HM, that means Cavern Skeletons are replaced by Armored and Archer versions most of the time.
So you have not only win (wave 15) the Halloween event, you have exactly one day to find all 3 costumed skeletons (which replace only pre-HM skeletons), which is very frustrating.
Also, good luck getting a Windy Day and have it spawn the Angry Dandelion in HM. Yes, it's available in pre-HM, but it's so overtuned in Master Mode, you don't wanna fight it at all.