Animation doesn't work when set up in Animation Controller

I'm a relatively new user, currently doing a solo project for college in Unity.

I've been following Survival Shooter tutorial (http://unity3d.com/learn/tutorials/projects/survival-shooter-project).

Among other things, I've tried setting up my own enemies. One of those is a free asset from Asset store, as seen here: https://www.assetstore.unity3d.com/en/#!/content/11869

Problem is, I've tried setting up its animations the way it was set up in the tutorial, but the animations does not work for some reason.

I create an Animator Controller, set up parameters and states, but it still doesn't work. The spider just remains in its Idle state

Here's a screenshot of some of the mentioned stuff: http://prntscr.com/7yfa9d

What am I missing?

If it matters, at first I got message that I can't use those animations because they are Legacy or something, so I went and Copy-pasted spider model within the folder. After Spider - Copy was automatically imported in project, I used animations from that to assign to Animator Controller and then it worked.