Overviews of Aliens (TFTD)

All aliens are not, of course, equal. While a novice may be overwhelmed at any manifestation of Alien presence, he will soon learn to cope, and discern the abilities of his enemy. For those who aren't yet well-versed in such things, here's a rundown on how mean each of these creatures can be in a fight. For more details, look at aliens' specific pages or the stats page.

Low Threat

Gill Man - Armed Combatant

These guys are the worst. Not only are they bad soldiers but they're pathetic traitors to boot.

They have marginally better health and armour than the Aquatoids (though worse at actually shooting) but have no M.C. ability whatsoever with the sole exception of the Commander rank, who isn't especially good at it anyway.

Gillmen have no redeeming features whatsoever from a military standpoint, and we can only assume the aliens use them as cannon fodder by testament of their frequent appearance on the battlefield.

They have all ranks except for the Medic.

Methods of Disposal: Pretty much anything.

You will need to have examined a dead Gillman in order to unlock the Thermic Lance. Their associates are perhaps of more interest.

See also: Gillman | Medium Threat: Xarquid - Terror Unit | Medium Threat: Deep One - Terror Unit

Calcinite - Terror Unit

Melee only units with powerful claws. These guys can take a bit of a beating due to their high level of health and are pretty fast, but they don't have any special resistance to any weapons so sustained fire of any kind will drop them. Eventually.

Calcinites have no ranks and are found in the company of Aquatoids on land missions.

Methods of Disposal: Gauss or Sonic preferred, but Explosives and Gas Cannons can be useful.

A dead Calcinite is required to unlock all the melee weapons, starting with the Vibroblade.

See also: Calcinite | Medium Threat: Aquatoid - Armed Combatant

Hallucinoid - Terror Unit

The Hallucinoid is a large floating terror unit that primarily attacks with a lethal "cold-based" melee attack. It also has a ranged attack, but due to a bug, the ranged weapon does not work underwater. Because Hallucinoids are rarely encountered on land via conventional means, this is almost never experienced. Some exceptions may occur on mixed crew missions.

Hallucinoids have no ranks and are found in the company of Aquatoids on underwater missions.

Notes: Both of its cold-based attacks do lethal damage rather than Stun damage. Like the Bio-Drone, this creature seems to have a preference for using its melee attack at close range. The melee attack may or may not be weaker, but it is definitely dangerous enough to kill an unarmoured Aquanaut in a single attack.

Methods of Disposal: Explosives are recommended due to the increased damage dealt to large size. For non-explosive attacks, the higher the damage the better. Low damage weapons don't have sufficient power to breach the moderately heavy armor. Phosphor is claimed to be effective, but in reality, even given their increased susceptibility, incendiary damage is likely too weak to kill Hallucinoids. This may be more a reference to the use of the unusual incendiary damage exploit.

Hallucinoids are able to alter their depth (i.e. "fly"). This can make it harder to hit them thrown explosives or melee weapons. On the other hand, it makes misses with ranged area-effect rounds much safer.

See also: Hallucinoid | Medium Threat: Aquatoid - Armed Combatant

Zombie - Fallen Aquanaut

The unfortunate result of an entanglement with a Tentaculat. Zombies are slow and armed only have a melee attack. This makes them easy to evade, run away from and kill. They are completely immune to stun weapons and leave a nasty surprise for you upon their death: A bouncing baby Tentaculat with full TUs and a hunger for tasty X-COM flesh. Note that this will be a tentaculat at base stat levels that have not been adjusted by difficulty level. A boon on superhuman, a curse on beginner.

Zombies have no ranks and can only be found where there are already Tentaculats which (thankfully) means at least you don't have to worry about Civilians feeding these things.

Methods of disposal: Pretty much anything so long as you can take care of the resulting 'surprise' as well; if you can't, flee and let the zombie waddle after you (it's safer!). If all else fails, try to strike the killing blow with a phosphorous attack. This prevents the embryo from hatching.

Medium Threat

Aquatoid - Armed Combatant

Distant relations to the Sectoids, these guys have much the same strengths and weaknesses.

They make at best average soldiers having pitifully low health, so why are they 'medium threat' you ask? Aquatoid Technicians, Navigators and Commanders have Molecular Control abilities, and the higher ranks can be pretty good at it (the Commander has the most powerful MC you'll ever face).

Aquatoids can be of any rank (they are the only race to have Medics).

Methods of Disposal: Anything, Staring, Harsh Language - they really are that weak.

See also: Aquatoid | Low Threat: Hallucinoid - Terror Unit | Low Threat: Calcinite - Terror Unit

Deep One - Terror Unit

Probably the biggest mistake the aliens made was creating the Deep One as they are the basis from which X-COM goes about unlocking the most important secrets: Armour and Advanced craft.

Although they're pretty resistant to the basic 'bought' weapons, they're simply fodder for anything else. They are armed with what appears to be an electrical mortar of some kind which is unaffected by armour and does not require a direct line-of-sight to its target, thankfully it is woefully inaccurate. This weapon is geared towards dealing maximum damage to human foes, and does less damage to other aliens.

Deep Ones have no ranks and are found in the company of Gillmen in land missions. They can be found in water during the second and third end-game mission.

Methods of Disposal: Pretty much anything really.

It cannot be overstated how vitally important these creatures are to your research, you will require dead examples to unlock research into Aqua Plastics and Plastic Aqua Armour, and afterwards live specimens to unlock Ion Armour, advanced Submarines and advanced SWS models.

See also: Deep One | Low Threat: Gill Man - Armed Combatant

Xarquid - Terror Unit

Probably the rarest of all the TFTD units. They resemble a giant nautilus that move backwards, with their tentacles facing the front.

They have fairly decent stats they don't seem to move around much, preferring instead to 'camp' a particular location and use their good reflexes to tag intruders with their particle cannon, which seems to be roughly equivalent to the SWS Gauss Cannon making it fairly decent at cracking X-COM armour.

Amongst the aliens, the Xarquid feature some of the higher end external armour, making low powered weapons ineffective. Being a 2x2 unit it is however very vulnerable to explosives or stun damage.

Xarquid are found in the company of Gillmen on underwater missions. They may appear on land during shipping lane attacks when attached to Mixed crews.

Methods of Disposal: Explosives, Armor-Piercing weapons (especially mid to high powered drills).

See also: Xarquid | Low Threat: Gill Man - Armed Combatant

Triscene - Terror Unit

Another pretty rare unit, the Triscene is on first appearances a formidable foe with its twin Sonic Cannons and melee attack along with lots of Time Units and health. Note that the side cannons on it do resemble the X-COM Craft PWT cannons - but are only for show.

While a dangerous foe, its biggest weakness is its non-existent underside armour which means it can be even be felled with a Magna-Blast Grenade.

Triscene have no ranks and are found in the company of Lobster Men, Tasoth and Mixed crews on land missions.

Methods of Disposal: Explosives.

See also: Triscene | High Threat: Tasoth - Armed Combatant

High Threat

Lobster Man - Armed Combatant

These orange instruments of doom are the Muton of TFTD. Big and tough, but not really the sharpest knife in the alien drawer. Despite this they are very flexible opponents as they can fight with standard weapons or their built-in claw attacks, which can give even the most well protected aquanaut a major pounding.

They lack external armour, but have insanely formidable resistances that allow them to shrug off up to 50% of almost every damage type. Combined with plenty of health, this allows them to sustain unreal amounts of damage before dropping dead. Thankfully this is balanced by Lobstermen taking more damage from stun or drill type weapons.

Lobster Men have all ranks except for Medic, and none of them have any M.C. ability at all.

Methods of Disposal: Thermal Shok Bombs (or Tazers if you're feeling brave), drills, lots of explosives, Sonic weapons and a backpack full of clips.

A live Lobster Man Commander is required to research the Leviathan Assault Sub and end-game research. Earlier versions of the game required a Lobsterman Navigator for Magnetic Navigation.

See also: Lobsterman | High Threat: Tentaculat - Terror Unit | High Threat: Bio Drone - Terror Unit

Tasoth - Armed Combatant

Fast and agile, these guys can be quite a nuisance as they have plenty of TUs to run around and lots of health to soak up damage, although they don't really have any special resistance to any weaponry.

Tasoth come in two flavours: Soldier and Squad Leader. Both ranks are more or less the same except for the leaders having slightly better stats. and more importantly Molecular Control ability.

Methods of Disposal: Sonic and Gauss work fine, you'll just need more of it.

A live Tasoth of either rank is required to research the M.C. Disruptor and M.C. Generator.

See also: Tasoth | Medium Threat: Triscene - Terror Unit | High Threat: Bio Drone - Terror Unit | High Threat: Tentaculat - Terror Unit

Bio Drone - Terror Unit

Like miniature Cyberdiscs with good armour, powerful and accurate weapons and absurdly high reactions.

These things are a menace that can not only cut your men down in their own turn, but take a fair amount of punishment before falling, and when they do fall they explode.

There are however two quirks of this beast to take advantage of:

• Firstly they don't self-destruct if they are killed by melee weapons (this includes the Thermal Tazer).
• And second, they have a secondary melee attack which they prefer to use in close quarters - the thing is it is INCREDIBLY inaccurate, so if you stand next to it you might just survive.
• They leave a trail wherever they go. If you see a burned path in the ground, you can often guess their locations. This is even more effective for parts of the map that have already been sighted, as you'll be able to visually see the burnt path being created after each turn.

Bio Drones are often found in the company of Lobstermen, Tasoth and Mixed crew land missions.

Methods of Disposal: Gauss, Sonic and Explosives from as far away as possible; or Melee as close as possible.

See also: Bio-Drone | High Threat: Tasoth - Armed Combatant | High Threat: Lobster Man - Armed Combatant

Tentaculat - Terror Unit

Tentaculats are very similar to a Chryssalid. These big brain creatures have the same ability to proliferate by zombifying their targets into mindless walking incubators for their young. They are only found in water and are generally found guarding Dreadnaughts, Terror Ships or alien structures. Tentaculats are able to raise or lower their elevation in the water with impunity. In short: Underwater flying Chryssalids. The one saving grace is that no civilians are ever encountered on the same map as tentaculats.

Tentacults have a high distribution of front armour, but their rear and sides are weaker. If encountered early with weaker weapons, try to hit them from the flanks or rear as much as you can. Liberal use of explosives generally does the trick.

Tentaculats have no ranks and are usually found in the company of Lobstermen or Tasoths for underwater missions.

Methods of Disposal : sonic weapons, explosives and a healthy dose of luck.

See Also Chryssalid | Zombie | Tentaculat | High Threat: Lobster Man - Armed Combatant | High Threat: Tasoth - Armed Combatant

See Also

• Alien Stats (TFTD)
• Damage Modifiers (TFTD)
• Overviews of Aliens (UFO Defense)