How do I make the Demolitionist NPC happy in Terraria?

To make the Demolitionist NPC happy in Terraria, you need to understand the NPC happiness system, which was introduced in the 1.4 update. This system allows NPCs to have preferences for specific biomes and neighbors, which directly affects their happiness. A happy NPC will offer discounts on their items and, in some cases, sell unique items. For the Demolitionist, his happiness is influenced by the biome he lives in and the NPCs he is near. HereÔÇÖs a detailed guide on how to maximize his happiness.

First, letÔÇÖs talk about the mechanics. The Demolitionist prefers to live in the Underground or Cavern biomes. These biomes are found below the surface layer of the world, where the background changes to stone and the lighting becomes dimmer. If you place the Demolitionist in a house in one of these biomes, he will be happier than if he were placed in a surface biome like the Forest or Desert. Additionally, the Demolitionist likes to be near the Tavernkeep and the Mechanic. If you place him in a house near these NPCs, his happiness will increase further. On the other hand, he dislikes being near the Arms Dealer and the Goblin Tinkerer, so avoid placing him near these NPCs.

To start, youÔÇÖll need to create a suitable house for the Demolitionist in the Underground or Cavern biome. This involves digging out a space and building walls, a floor, and a ceiling. The house must be at least 6 blocks wide and 10 blocks tall, with walls made of any material except dirt. YouÔÇÖll also need to place a table, a chair, and a light source inside the house. Once the house is built, you can assign the Demolitionist to it by talking to him and selecting the ÔÇ£HousingÔÇØ option.

Next, youÔÇÖll want to place the Tavernkeep and the Mechanic in nearby houses. The Tavernkeep is an NPC who sells items related to the Old OneÔÇÖs Army event, and the Mechanic sells wiring and mechanical items. Both of these NPCs can be found in the Cavern layer, so itÔÇÖs a good idea to build their houses close to the DemolitionistÔÇÖs house. Make sure to leave at least 25 blocks of space between each house to prevent overcrowding, which can reduce happiness.

One important tip is to avoid placing the Demolitionist near the Arms Dealer or the Goblin Tinkerer. The Arms Dealer sells guns and ammunition, and the Goblin Tinkerer sells accessories and reforge services. While these NPCs are useful, they will decrease the DemolitionistÔÇÖs happiness if they are too close. To prevent this, you can build their houses in a different biome or at least 25 blocks away from the DemolitionistÔÇÖs house.

Another consideration is the type of biome you choose for the Demolitionist. While the Underground and Cavern biomes are his preferred biomes, you can also place him in the Snow biome if you prefer. The Snow biome is a surface biome, but the Demolitionist will still be happy there as long as he is near the Tavernkeep and the Mechanic. However, he will be slightly less happy in the Snow biome compared to the Underground or Cavern biomes.

In terms of resource requirements, youÔÇÖll need basic building materials like wood, stone, and torches to create the houses. YouÔÇÖll also need to gather materials for furniture, such as tables and chairs. If youÔÇÖre building in the Underground or Cavern biome, you may need to clear out some space by mining. This can be done with a pickaxe, and itÔÇÖs a good idea to bring along some explosives like bombs or dynamite to speed up the process.

When it comes to class and equipment considerations, any class can build houses and manage NPC happiness. However, if youÔÇÖre planning to mine in the Underground or Cavern biome, itÔÇÖs a good idea to bring along a pickaxe with high mining speed. The Molten Pickaxe or the Reaver Shark are good options for early to mid-game players. You may also want to bring along some weapons and armor to defend yourself against enemies in the Underground or Cavern biome.

In summary, to make the Demolitionist happy, you should place him in a house in the Underground or Cavern biome, near the Tavernkeep and the Mechanic. Avoid placing him near the Arms Dealer or the Goblin Tinkerer, and make sure to build suitable houses with the necessary furniture. By following these steps, you can maximize the DemolitionistÔÇÖs happiness and take advantage of the discounts and unique items he offers.