Welcome to Gaia! ::

It was just released yesterday, I think. It's supposed to be a fun way to practice micro skills.
Here's a link.

I haven't had a chance to play it yet, but from what people are saying it's not too difficult to get the portrait or the achievements.

With micro lol. Just kinda like how you can beat banelings with marines. Zealots don't die instantly from banelings. Banelings feel more like a soft counter to zealots, just because they are so beefy compared to other race light units.

I'd have to mess with the challenge a bit to tell you exactly how to do it, but off the top of my head, you could try the basic patrol move with them spread out, so banelings bust on only 1 at a time, and no splash damage is dealt. Or just spread them out so no splash damage is dealt. Not too sure, but I know it's possible.

Just did it today. Most of the protoss ones I was able to do instantly, other races, not so much lol. Took me about 2 in game hours to do all of them.

@ the baneling with zealots, what I did was send the closest one to attack move to the banelings, and then just quickly move+hold position all the others making sure NONE of them are in range of another zealot to get splashed. You pretty much need to make sure no zealots are close enough to get splashed. Took me a few tries, but it's not as hard as some other ones for me.

For me, the baneling snipe was hard as hell for me, and I feel like I only won because later on, a bunch came out of one side, and it was a lot easier for me to target them on one side, rather than trying to snipe from all angles.

Also, round 29? I think? Where there are 2 zealots and you have 3 marines without stim? That took me FOREVER D=. Was so hard for me.