Enemies

Enemies in Monolith are hostile entities that populate the Facility and often stand between the player and game victory. They are usually weaker than Mini-Bosses and Bosses. Many enemies display unique firing patterns and behaviors, utilize various projectiles, and drop Debris or Pickups upon death. Some enemies are unique to certain floors, but many can be found on several.

There are five sub-types that enemies are categorized into: Undead, Machines, Mages, Constructs, and Creatures. Every type excluding Creatures is susceptible to a specific weapon Keyword.

Each enemy also has a Bestiary entry available on the bulletin board in the Hub.

Red Bullets
Every projectile and hazard in Monolith deals exactly 1 point of damage unless it is absorbed by a Shield first. The only exception to this is Drdskull's guillotine, which always deals 5 points of damage when touched. Some enemies fire red and black bullets that deal 2 points of damage instead of 1, and cause knockback. These are separate from blood bullets, like those fired by swarm Hosts.

Frost / Cold Bullets
Some enemies, especially those found in Maintenance System, fire blue bullets that slow the player down if they get hit by them. The Weatherproof Upgrade will negate this slowing effect but not the normal damage dealt along with it.

Halos
Rarely, an enemy will spawn with (or be given) a colored Halo. Enemies seen wearing Halos will gain an additional power based on its color. Interestingly, Halos can also rarely be seen attached to an Aegis.
 * Red: Makes the enemy affected act like a Malice Engine, emitting an aura in which enemies release bullets on death, including the Halo enemy itself.
 * Orange: Makes the enemy fire 3-4 shots independent of its normal attack patterns.
 * Green: Pulls the player towards the Halo.
 * Blue: Spawns several Swarmers (see Creatures section) upon the death of the Halo's bearer. Cannot affect Swarmers, unlike other Halos.

Aegis
Some rooms contain enemies equipped with an Aegis, a reflective shield that slowly lines up with the player. If the player shoots the Aegis, small bullets will be fired back at them (regardless of what bullet type was initially fired). Aegises are indestructible, so players will have to work their way behind them in order to shoot the enemy that they protect. In harder areas such as Secret Rooms, Danger Rooms, Breaches, Unknown, Nowhere, and the The Temple, some will be upgraded to reflect bullets into homing purple stars.

These upgraded Aegises have an orange hue, and are known as Eternal Aegises.