Problem with "good riddance" achievement

[krd]

This is one of the last achievements that has been avoiding me so I decided to go for it on large map. Got clentaminator, purged my world of crimson. Then loaded the map in online map viewer, found few crimson spots I missed, went back to the game and purified it until no spots were left. Went to dryad, she is still saying the corruption is 1%. Reloaded the game but she is still sticking to her story. Searched my inventories and dropped few remaining crimson blocks but that didn't help. Out of the ideas, anybody can think of anything that I missed?

This is pre-hardmore so no hallow to purify. Maybe this achievement is only for post-hardmode worlds?

[Smetrix]

Yes, the world needs to be in hardmode and have all of the hallow cleansed as well.

[krd]

Darn, so much work for nothing. But I guess it will be easier to cleanup again when crimson spreads in hardmode.

[krd]

And I kind of like hallow, wish that could stay. But then I guess you can clean it for the achievement and then recreate it with clentaminator.

[Saizo]

Originally posted by Smetrix:

Yes, the world needs to be in hardmode and have all of the hallow cleansed as well.

That is simply not true.

@krd don´t waste your time with handling the Hollowed too, large corrupt and hollowed underground areas will appear and both will wildly spread and become bigger and bigger in hardmode which makes it impossible to purge.
I did this Achievement too and the world was NOT in Hardmode.
Or do you want to tell me the requirements have changed in that short time?

Take a Drill Contaiment Unit and just destroy all walls and blocks so you safe money and it is a easy way too.
Your problem might be that you forget a few single blocks.
Use a Biome Sight Potion to find the remaining ones.

With a Clentaminator you will hardly reach all corrupted tiles, the blocks are just stand in your way and you probably miss some tiles.
With a Drill you will have free access to every corner of the two (or three or four in some cases) corrupted parts of your world.

And you probably want to make a new, small world for that because with the underground areas and the fact that the hollow and the corrupt will quickly spread on almost all blocks it will be almost impossible to clear the whole world.

[krd]

Originally posted by Saizo19_:

Originally posted by Smetrix:

Yes, the world needs to be in hardmode and have all of the hallow cleansed as well.

That is simply not true.

@krd don´t waste your time with handling the Hollowed too, large corrupt and hollowed underground areas will appear and both will wildly spread and become bigger and bigger in hardmode which makes it impossible to purge.
I did this Achievement too and the world was NOT in Hardmode.
Or do you want to tell me the requirements have changed in that short time?

Take a Drill Contaiment Unit and just destroy all walls and blocks so you safe money and it is a easy way too.
Your problem might be that you forget a few single blocks.
Use a Biome Sight Potion to find the remaining ones.

With a Clentaminator you will hardly reach all corrupted tiles, the blocks are just stand in your way and you probably miss some tiles.
With a Drill you will have free access to every corner of the two (or three or four in some cases) corrupted parts of your world.

And you probably want to make a new, small world for that because with the underground areas and the fact that the hollow and the corrupt will quickly spread on almost all blocks it will be almost impossible to clear the whole world.

Thanks for your thoughts. I also though it odd that I cannot do it pre-hardmode because reading about online I didn't see it being mentioned. I assumed, and maybe incorrectly, that they have added this requirement in one of the recent patches.

As for overlooking few blocks you are right, it did happen. I have three crimson areas and there were few blocks in each one of them that I missed. However, when I had hard time finding them all I did a little "cheat" and loaded my current map in one of those online Terraria map viewers that shows you entire map. Then I did filtering and looked for crimson blocks only and that's how I found the ones I was missing before. The last time I checked the map viewer showed no remaining crimson blocks.