Is there an immunity for acid?

[DerdyDamn]

I saw people talked about acid immunity but I have not found it nor have I found it in the files. I want to use acid trail but its too dangerous to use.

[MysticD'MeeM]

There is not, those people were probably talking about toxic sludge immunity.

[Snobby Hobo]

Acid trail is useful when combining it with stationary spells. Also no that immunity does not exist.

[Mr Compassionate]

I think there is also not poison resist, correct me if I'm wrong.

[MysticD'MeeM]

Originally posted by Mr Compassionate:

I think there is also not poison resist, correct me if I'm wrong.

You are correct.
Resistances are (off the top of my head):

• Melee.
  
• Toxic Sludge (But not toxic derivatives such as toxic rock or ice)
  
• Fire
  
• Explosive (Note some explosives such as lightning bolt do multiple types of damage)
  
• Shock (Available from both the resistance and electricity perk)

Note that there's no projectile resistance (although repulsion will render slower projectiles inane and shield may block some). There is no lava, poison, acid or freezing liquid/gas resistance.
Lava can be countered by using lava->blood.
Freezing liquid evaporates into freezing gas which dissipates over time.

Poison and acid evaporate over time (acid having obvious side effects).
Both poison and acid have physical variant (poison + lava => Poison rock, acid + freezing => Frozen acid) which also do damage over time. Their evaporated counterparts are not dangerous (but both are flammable).

[Dead Parrot]

I would imagine acid immunity would completely trivilize the game. youd just need any kind of acid trail wand and you could basically hold one button and go straight down in an unstoppable torrent of acid.

[vermis]

yes, good. i want to do that

[cyäegha]

Originally posted by Dead Parrot:

I would imagine acid immunity would completely trivilize the game. youd just need any kind of acid trail wand and you could basically hold one button and go straight down in an unstoppable torrent of acid.

and if you don't have a wand with acid trail equipped, acid is such a situational hazard encountered so infrequently outside of the vault that it'd be almost useless a perk to take

it's pretty much one or the other with no in between