Explosive Reasoning

I was just in my hidden room, like always, when things went haywire. If it hadn't been for the Speedster I invented, I'd probably be a pile of goo buried under some rubble right now.

People keep asking me if I saw anything suspicious, but the only thing I saw was a blue pillar. I was taking a look at it earlier in the day and then things went wonky...

Hey, do you think you can help me out?

Did you go in?

There were monsters inside that Mystic Gate, mean ones, but I didn't find any samples. And as soon as I left, the thing turned red.

You said the colors changed?

The pillar I saw is at the bottom of the 16th Floor. I think... I think it might go to another dimension! Go inside and eliminate any monsters you find. If you come back with some samples, I might be able to figure out what's going on. If you don't find anything after about 100 monsters, just come back. I don't want to be responsible for you getting stuck inside.

Hm, give me a minute to process this. This is as weird as moving rocks.

Aren't you a little bit curious? Things are exploding over here!

No research samples yet? Eliminate 50 monsters inside the Mystic Gate.