I just watched a video where Thomandy (a youtuber who plays games) plays two Mario Maker levels, and one of them is called:
My transcription of this level by Daiki is:
Assuming I didn't miscopy, the first part should be:
挑戦者現れろ！！！ | Chousensha arawarero!!! | Let the challengers appear!!!
The second part is my problem. The last character should be -kyū, meaning "class", but the rest seem to form a word which is nowhere to be found in my references, and indeed Google won't transliterate it. From JEDict, my guess would be:
爆絶級 | bakuzetsu-kyū | bomb-sever class
However, besides being uncertain about transliteration (just look at how many readings the Wiktionary lists for the first character!), this translation makes little to no sense to me. So:
What does 爆絶級 mean? And how do I read it?