Make sure you aren't killing anything at any point. Also, make sure it isn't already unlocked, and that you're not on your first try at the level.

And in case you don't know, Axel Mode's Dark World maps aren't necessary for anything.

引用自 KarmaTheAlligator：

Make sure you aren't killing anything at any point. Also, make sure it isn't already unlocked, and that you're not on your first try at the level.

And in case you don't know, Axel Mode's Dark World maps aren't necessary for anything.

Checked Maber MkII multiple times. Unless I'm blind, it's not unlocked. I beat the level before too, and I'm not killing anything on my unlock attempts. Thanks though.

Really? It's not even necessary for the 100% Dark World completion achievement? If that's the case that might simplify a lot of stuff for my Axel Mode run.

The achievement for All Dark World is refering to Adell Mode specifically, likely because doing so in Adell mode gets you a specific item.

Alright then, I'll try a couple more times just for good measure and if I don't manage to get it then I guess I'll just leave it be. If I get it to unlock then I'll say how once I do.

I know this is an old topic, but I am 100% sure someone else will end here when seeking info about this like me, since all the wikis seem outdated or something.

To unlock access to the Dark world of stage 2-2 in Axel mode you must capture ALL the monsters in the stage.

You can check it here: https://youtu.be/FWHtM0rPlWI?si=rCFHBWwyMrLA2ylg&t=873

To capture:
*The level of the protagonist (Axel) must be higher than the level of the monster you want to capture.
*You must have unlocked the specific tier of the monster you want to capture (in other words, you must be able to create them).
*Throw the monster into the base panel, be sure to have some powerful units in reserve.