Dusters are a new mob which spawn abundantly on caves, but they can also spawn at night. At night on a Dust Forest biome, they spawn a lot more, like endermans in the end biome. These enemies can be a major challenge in the early game, since they deal 10 damage and have 20 hearths of health. They look like zombies, but with yellow pants. Once you get close to diamond, netherite or enderite gear they stop being a problem and just turn into more difficult nighttime mobs. They drop duster organs on death.

This is the first boss. It's like a giant version of a Duster, and can spawn using the Shard of Dusters item. He's a pretty challenging boss that has 200 hearths of health and deals the equivalent to 15 hearths of damage when unprotected. That is not even mentioning the fact that it regularly attacks with lightning, which is armor piercing and also sets you on fire. He is also inmune to most forms of ranged attacks, except tridents. Diamond armor is way too weak for this guy, you will need at least netherite armor (if you are REALLY well prepared), although enchanted enderite is recommended and also strenght and fire resistance potions. Once killed, he drops a Radioactive Nugget. With killing him 3 times and getting 3 nuggets, you can craft 1 Radioactive Ingot. This may seem like a decent way of getting radioactive ingots, but you need to remember you need to get the Shard of Dusters for spawning the boss, and that requires pure enderite,  which requires 4 diamond blocks and 4 netherite ingots. This mean with this method you will need 48 gold and 48 ancient debris to get 1 radioactive ingot. Just crafting the radioactive ingot regularly with 1 pure enderite and other ores is usually a better option, considering the cost of making the shards and killing the boss.

This is the second boss, and it's tough, and i mean TOUGH. You need a shard of the snakes to summon it, which costs 1 radioactive nugget, 4 zombie heads and 4 emerald blocks. This means you need to have killed the Duster Commander before spawning this boss, but the Commander is EASY compared to this one. You can hit its body segments or its head. Only hitting the head is necessary for killing the boss. Body segments follow the segment in front of each other. They have 10 health and when broken, will destroy all of the ones following them. However they will grow back up to 15 body segments over time. Getting close to them disables your shield and deals a lot of armor-piercing damage. For the head and the actual boss, it moves quickly and it's faster than you when you hit it. It has around 450 hearths of health and deals 30 hearths of damage. A fusion sword would turn this fight into a piece of cake, but by this point you may have gotten a radioactive sword. If you haven't though, then at least pure enderite armour and pure enderite weapons are needed. Most ranged attacks will work for this boss. Don't let it get too close to your home or try to block it with cobwebs, since it breaks certain blocks. If you manage to beat it, then congrats because you basically finished the mod's main bosses!

Was already described in detail before, but basically you can place 2 radioactive ingots to make 1 fusion ingot. However, the crafting recipe needs 4 fusion ingots, making it EXTREMELY EXPENSIVE, just barely surpassed by the Fusion Bow, requiring 6 fusion ingots (3 fusion strings, which in turn require 2 fusion ingots for each one crafted).

This block will make it so no mobs can spawn in a 20x20 radius from it. If you have this mod installed in a modpack, this mod adds a "Spawn Indicator" potion effect that automatically gets applied to every entity spawning for 1 tick. This way, the game can detect when an entity has spawned near the activated block. If there are mobs from your or other mods that you don't want affected by this block, you can use a repeating command block or code it so it executes this command: "/effect clear @e[type=yourmodid:yourmob] raid_fn:spawn_indicator". It should remove the spawn indicator effect and the block should not detect them.