Board Thread:Questions and Answers/@comment-117.217.189.131-20140917074049/@comment-25220796-20140917104607

It is a well rounded weapon, with no real weakness.

In SinglePlayer (which I believe you are playing) it does 100 damage.

In Multiplayer, it does from 40-100 damage, which is pretty good.

Also, an Impaler fires a stake, which means it has to fly through the air before hitting a target.