The Creature

The Creature (also known informally as "Hobbes") is a monster that follows the player across the island of Eden.

AI

The Creature spawns on a hotspot/location trigger system. In other words, it is not traveling around on the island. It will appear near the player in "hotspots" (locations of interest such as near important plants the player needs to finish the story) along with random locations. Running, falling, swimming, and other loud activity that one might think attracts a predator does not cause the Creature to spawn.

However, when the creature does spawn, it acts very much like a predator. It will slowly stalk towards the player, and if spotted, it will growl menacingly and swipe at the player with big, powerful claws that will kill with two hits. Turning your back on the Creature or running from it will cause it to give chase. Tip: It's faster than you.

If the creature has lost sight of the player, it will walk away and despawn. Or, if the player has reached a certain distance away from the creature, it will also despawn, making travel safe again. Because of the spawn mechanics of the Creature, getting up and sprinting in the direction that it despawned will not cause it to respawn.

The simplest and most effective way of getting rid of the creature (even if it has already seen you) is to immediately duck behind an object such as a tree that blocks direct line-of-sight to the creature. More often than not, the creature will circle the object you've chosen to hide behind, so make sure that you're able to move around your hiding place. Thick trees, head-statues, pillars, and rocks are perfect for this. Keep the object between you and the creature's eyes in order to stay out of its vision. If you stay out of view of the creature long enough, it will give up and run off. This is done much easier with a mental stimulant or the Brain Emphasis Drug, as your head will turn to face the creature while crouching and not moving the mouse.

Notes

The following notes are subject to change and are largely based on speculation and experience.

• The Creature is invincible. Attacking it with rocks/knives/axes is ineffective.
• Two hits from the Creature will kill you. The first one sends you tumbling away from it. Click repeatedly to skip this animation and get back on your feet faster.
• The time of day does not affect how often the creature spawns. Daytime is just as dangerous as nighttime. 
• Heartbeats - slow when the Creature spawns, fast when the Creature spots you.
• In some cases while traveling and immediately after hearing your heartbeat, turning 180 degrees and running in the opposite direction will cause the Creature to despawn from being too far away from the player. However, the Creature may have spawned behind you...
• When running away from the creature, make use of dense trees, etc - the animal is quite wide, and cannot squeeze through small gaps that the player can.
• It is attracted to fire. Waving a burning torch in front of it will cause it to pause and watch the movement of the flame. Throwing the burning object will cause the Creature to turn and look towards it, then run over to investigate. Due to this fact, burning sticks or torches seem to be more useful against the creature than conventional weapons such as the knives and axes found throughout the island.
• Throwing items such as rocks at the Creature will cause it to roar and shake its head, but is otherwise ineffective.
• The Creature does not spawn over water. Thus, traveling along the coast is the most effective way to prevent having the Creature spawn near the player.
• Useage of several plants that provide a mental stimulant will help locating the Creature as well as identifying whether or not it can see you. The Brain Emphasis Drug is a permanent solution. When the Creature spawns and your heart starts to beat, crouch immediately to take advantage of the HUD upgrade you get from these effects.
• Turning your back on the Creature or running away from it will cause it to run after you and tackle you. Thus, it is advised to face it and back away if it spots you. Throwing a burning stick behind it might help distract it long enough for you to be able to hide.
• It cannot swim, so swimming across a small span of water will help escape it. Using plants that provide extra swimming strength (to prevent drowning) are useful here - Herculean tonic and Muscle Emphasis Drug.
• Hiding or swimming away from the Creature are the most effective forms of evasion. Hiding behind trees, logs, landmarks, large rocks, or the best option - inside camps where the Creature cannot go - are optimum. High/dense grasses will also work, and will prevent line-of-sight.
• Steam Achievements are available for hitting the Creature with certain objects, such as an apple, a banana, an orange or a tin can.

Bugs

• Often after hiding from the Creature, it will run/walk off. In doing so, it gets stuck in a loop running/walking in a circle. If it spots you during this loop, it will regain its senses and come after you again. Remain hidden while moving away from it, and it will disappear when you've moved far enough.