Second half of a Tier spawns the next Tier version of the monster if you're in a Danger Room.

You're on Depth 15, which is on the second half (Past Terminal), so you get Tier 3 instead of Tier 2. The point of the Danger Room in general is to have you facing stronger than normal (Stronger than the Depth you're on) monsters. If you accept this challenge and succeed, you're rewarded.

Nothing is wrong with the Danger Room the way it is other than the fact that there's currently not much variety until next update. They're meant to be more challenging than what you'd normally see in that area, and they're 100% optional, so 100% fair.

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Edit: You would have stood more of a chance if you were -actually- in Tier 2 equipment (2~3*). Taking another look: You're in starter equipment, no Vitapod, and the Danger Indicator on your mini-map is a large purple dot, meaning, ''You might be traveling too deep'', AKA ''GET THE HELL OUTTA HERE, YOU DON'T WANT NO PART OF THIS!''

That's not a flaw in how the Danger Room works, that's a flaw in how that particular monster works.

Quicksilvers are kinda fine if there's terrain or other monsters that you can use as cover. The third wave of the quicksilver danger room feels a lot fairer than the other spawns because the other jelly varieties that spawn in it can be used for this reason. The other three waves are b*******.

Um no. They're at D15, in proto gear, no vitapod, no [heavens to Betsy] WEAPON. That's not being "skillful", that's being COMPLETELY AND UTTERLY IDIOTIC!

-EL

Lol XD

I agree about the weapon, but the init armor... somehow I think it's possible if you go though the right gates and get incredibly lucky. You probably need a decent weapon otherwise healers will out-heal you. Of course I haven't reached T3 yet, so I'm not sure if it's possible to get though T3 in low-level armor...