Quick question. Is it necessary to include "go" or "come" here for this to work or is it natural without?
If you as much as (go/come) near the building we're going to kill the hostages.
Quick question. Is it necessary to include "go" or "come" here for this to work or is it natural without?
If you as much as (go/come) near the building we're going to kill the hostages.
We usually use so much as rather than as much as in such contexts...
...but there's nothing actually wrong with the version as cited by OP - it's just the less common stylistic choice.
Essentially, so/as much as is an optional intensifier in such contexts. A common alternative is If you dare move I'll kill you. Or we can add even before the forbidden act and put heavy stress on the verb: If you even move I'll kill you.
As ever, the choice between come near and go near simply depends on whether the speaker is currently at the location. It's very uncommon for that rule to be broken by native speakers, but here, here, and here are some earlier ELL questions about it.
You must have one of “come” or “go near” to be correct.
It is an action that will cause the hostage to be killed. The coming or going.