Daily kill variety. How to tell?

Is there any way to know what type of monsters have I already slain for the daily kill variety achievment?

I randomly kill mobs untill I have it completed (10 different type of creatures), but some times I'm not sure if I have already killed one type or not.

Does the game offer any clue regarding this?

It would also be nice knowing a creature's type (e.g. beast, human, insect...) in some way. Right now I have to figure that.

Unfortunately, there is no way to tell.

You can either keep track manually, or keep killing mobs on your own until it pops.

I've found it helpful to get this achievement over multiple characters; even only two different starting zones should have enough variety to quickly earn the achievement.

If you open your Achievement window and then open your Slayer Panel you will be able to see all the different Varieties of mobs.