Rain World is a survival platformer where a ferret-like Slugcat explores the ecosystem grown from a decrepit outdoor facility. The player is most often treated as a One-Hit-Point Wonder, as almost anything that wants to kill or eat it can take it out in a fell swoop. This makes the average hostile creature extremely dangerous by the standards of other action games, but the player's freedom of movement and the game's relatively slow pace allow the Slugcat to overcome its shortcomings. Nevertheless, such should speak volumes about the ones that stick out as particularly difficult to deal with.
Base Game
- White Lizards are a step up from the earlier three species encountered by a new player going into Industrial Complex. They have two abilities that make them strong against unwary players. First, they change color to blend in with the environment, lying in wait to ambush prey. They can also reel in prey with a tongue far longer than Blue Lizards'. This is furthered by their tendency to perch on high walls where you can't horizontally throw a spear at them. And if these strengths fail it and it's still dead set on catching you, it can crawl to you with alarming speed and ferocity, despite what Pink and Yellow Lizards having a higher "baseSpeed" stat would imply.
- Adult Centipedes are more dangerous than other wall-climbing predators. Their method of attack is to grab a lighter creature with both ends of its body, instantly electrocuting them. Unlike Lizards, hitting them with ordinary weapons won't reliably free you from their grasp. They're most common in Subterranean, Pipeyard, the Gutter, and some of Outer Expanse. Hopefully you can either kill them before they assume a defensive curl to make melee combat lethal, or deter them by throwing firecracker plants.
- Coalescipedes are swarms of small spiders that live in dark areas such as Shaded Citadel. They are normally averse to light sources, but if they form a swarm big enough to outweight another creature, they will form a chain that skitters to their target and proceed to maul it to death. These spiders are quiet and blend in with darkness, so it's easy for them to take you by surprise, and once they're on you, they can't be defended against with conventional weaponry.
- Daddy Long Legs are floating, bulbous masses of tentacles and flesh, who blindly flail around the Five Pebbles facility looking for prey. If they hear you, they will pursue you with vicious persistence, flailing their sticky tentacles after you and into spaces the main body can't reach.note Contrary to popular belief, they are willing to squeeze through pipes if one blocks their way to you. If they get you, they will not let you go unless you toss a throwable item like a rock or spear at the tentacle, and even then they might just grab you again with another tentacle. They're nigh-unkillable, too, their cores having 200 health.note Stealth is usually the only option to get by them in a timely and safe manner.
Hard-Mode-Predominant Creatures
In the easier two campaigns, where players are likely to still be learning the ropes, some creatures, all except Red Lizards being introduced in version 1.5, are restricted to "lineage" dens and only show up if many other creatures nearby are killed by the player. This is for plenty good reason.- The two "red" variants of common predators are the pinnacle of might, brutality, and agility amongst their brethren. Thankfully, they never spawn naturally when playing as the Survivor or Monk.
- Red Lizards can tank six spear hits, and have a natural resistance to explosives and pain; they take a lot more damage before being stunned. They're very fast, will follow Slugcat everywhere, and can launch a spit attack that stuns and slows Slugcat upon hit, allowing them to close in for the kill. Stealth isn't even an option either, due to these guys and Caramel Lizards having the best sight out of any lizard in the game- it's very easy for one to spot you from outside the visible game area. They're the ultimate land predator, and nothing can stand up to them aside from Daddy Long Legs and Leviathans. If a Red Lizard spots you, getting away or killing it should be considered a legitimate achievement and is often cited as the toughest thing to do in the entire game.
- Red Centipedes are even tougher versions of Overgrown Centipedes. While the latter are relatively easy to deal with, these guys are exceptionally quick and relentless, able to chase Slugcat all over the region thanks to their ability to crawl on walls. They're quite clever too, able to use their long bodies to reach and grab Slugcat with frightening precision. Red Centipedes are also heavily armored, meaning each small segment has a single-use shield, making the creature hard to damage or stun. The only reliable ways to defeat them are spearing them with explosive spears and blasting them with Spore Puffs, but those are easier said than done considering how fast they move. These things are so scary that even Vultures and untamed Red Lizards will flee from them, and they've been spotted taking down all sorts of top-level predators without any fear.
- Cyan Lizards, also known as Leapzards, are a hard-mode lizard that can dash into the air accurately. Along with their middling-length tongues, wall-climbing, and ability to hunt in uncoordinated packs, they are thus so mobile that players' common strategy of running away from predators often falls flat, in favor of stunning them with rocks or risking direct combat with them.
- King Vultures are faster and tougher Vultures, equipped with jet-propelled barbs that they shoot out to spear Slugcat. These things fire fast, and being hooked by one is instant death, so the only way to dodge them is to anticipate their firing and jump out of the way.
- Dropwigs are ambush predators that perch onto a ceiling, then drop quickly when they notice prey. The initial attack has a higher chance than usual of being lethal, but these enemies force Slugcat to be far more aware of their surroundings. Worse yet, they can set their ambushes right above a room entrance, the Blinded burden in Expedition forces you to dodge their drop attack on reaction, and their potential use of white pearls or plain spears as bait averts Schmuck Bait and can easily lure an unwary player to their capture.
- Spitter Spiders are larger, red-quilled versions of Wolf Spiders. Instead of lunging at their prey, they fire darts at it from a distance. This gives the victim a limited window of time to either kill the Spitter Spider or escape its search before the venom temporarily paralyzes it. This situation is very easy to get into, because the darts are fired repeatedly, and they move too fast and are shot too quickly to dodge.
Downpour DLC Creatures
- Aquapedes are underwater, legless Centipedes that navigate the fallen structures of Shoreline with Centiwing-like fins. While other large Centipedes are deadly enough, these ones are almost as big as Red Centipedes, and rush at prey exactly as relentlessly. They're harder to spear, too, since projectiles experience swift falloff underwater.
- Miros Vultures have over 1.5x the health of a King Vulture and sport both the speed and head of a Miros Bird which means getting caught by their jaws is certain death. They lack the King Vulture's harpoons... and instead have an explosive blast launcher in its place, which will either kill you, or stun you to the point where it catches up and kills you. Unlike other vultures Miros Vultures can and will pursue you through narrower spaces at stupidly fast speeds.
- There's an even worse kind of lizard called "Train Lizard
" that's extremely fast, durable (8 health instead of a Red's 6), and deadly; lethally biting every frame even if they miss; and they're highly aggressive. They can be found in the Industrial Complex when playing as the joke character Enot.
