Demonic malware (timed debuffs; temporarily disable certain Praetor Suit functions)

* Worms (acquired by close proximity to infected machinery/enemies)

* Corrupt robotic assets (UAC robots or supply drones) the Slayer encounters

* Jam automap

* Jam HUD

* Viruses (require physical interaction with infected machinery/enemies)

* Disable ammo fabricators

* Disable armor fabricators

* Disable equipment items/tools

* Disable Harmonic Resonators (set heavy metal volume to 0)

* Disable power-ups

Mars (UAC)

* Ammo crates (restore all of Slayer's common ammo)

* Arena portals

* ATLAS shield batteries (powerful explosive/electric)

* Breakable walls/doors

* Coolant tanks (freeze enemies, briefly slow Slayer)

* Destructible platforms (usually over lava or nukage)

* Explosive barrels (presumed to contain Argent, damage Slayer and demons)

* Exposed wiring (can be shot to produce electric surge)

* Flame vents (from broken gas pipes; can be continuous or periodic)

* Gressen generators (gravity field generators; enable Earth-like gravity inside Mars Base)

* Health Station

* Industrial capacitors (electric barrels; do no damage but electrify enemies)

* Jump pads (malfunctioning gravity panels or DynoPhasic gravity elevators)

* Laser gates/grids

* Map stations

* Molten metal (harms both demons and the Slayer)

* Nuclear bombshell (tactical nukes, serve as "nuclear" explosive barrels)

* Nukage (corrosive/radioactive liquid waste; harmful to demons but harmless to the Slayer)

* Nukage barrels

* Plasma emitters (emit damaging surge across small area; can be mounted on floor or walls; can be continuous or periodic)

* Quick-deploy droid stations

* Psionic emitters (can be hijacked via relay terminals; can be used both by Slayer and Rambler Griefers to transmit psionic frequencies to distress opponents)

* Reinforced walls (in Lazarus Labs; highly resistant to damage; restrict the Slayer but not phase-shift-capable enemies)

* Security turrets (machine guns that deploy from ceiling to prevent unauthorized access)

* Teleporters

* Test-firing rocket engines (in Spaceport only)

Mars (natural)

* Dust storms (reduce visibility; boost electric attacks and raise chance of lightning strikes)

* Low gravity outside of Base

* Lightning strikes (damage and hitstun)

* Sand (shoot to raise obscuring dust plume)

Mars (demonic)

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* Backdoor (construct in shape of door, injects demonic malware when interacted with)

* Blackout Drone (produces cloud of metallic particles that obscures all light/sound in room; doesn't affect Clearsight)

* Blood Drone (corrupt supply drone; restores ammo but at cost of HEALTH)

* Cloak Drone (conceals single demon in cloaking field)

* CRTerror (fills area with rising audiovisual static; explode when destroyed)

* Cursed darkness (seen in Lazarus Labs - greatly reduces ambient light)

* Cyber Nest (cyborg Gore Nest; injects malware virus when destroyed)

* Demonic malware

* Dust Devils

* Evil Eyes (drains life and fills vision with hellish symbols when in their line-of-sight)

* Fireblu Torches (blind whenever in own field-of-view)

* Gore Nest

* Hellgrowth

* Portal Drone (follows Slayer and constantly transports demons closer to him)

* Suicide Drone (corrupt supply drone; explodes when interacted with for damage)

* Trojan Drone (corrupt supply drone; injects demonic malware when interacted with)

* Virus Drone (corrupt supply drone; kamikazes Slayer when sighted to explode and deliver demonic malware)

Hell (natural)

* Acid lakes (replace nukage)

* Blood Storm (highly corrosive metallic rains)

* Breakable floor over chasms/lava/spikes (shoot to break and drop demons)

* Collapsible stone columns (topple by Rampaging into them, crushing demons they fall onto)

* Crystal obelisks (topple by shooting at base, crushing demons they fall onto)

* Crystal spikes (impale enemies thrown onto them)

* Gas vents (lift/jump pads)

* Firestorm (incendiary storm)

* Lava lakes/rivers/falls (harms both demons and the Slayer)

* Shockspires (floating rock spikes energized with red electricity; hit with stun bomb to short out and release strong shockwave)

* Stalactites (topple by shooting at base, crushing demons they fall onto)

* Tyrant Star (damages whenever are caught in its scorching rays; must take cover within shadows)

Hell (artificial)

* Crusher ceilings/pillars

* Hellstorm Pylon (perimeter cannons defending Hell fortresses)

* Hive Nexus (demonic map station)

* Sentinel Bonfires (resting place of fallen Sentinel warriors, laid to rest by Slayer; restore Slayer's health)