NightCrawler Tech achievement glitch

[Mobius Stork]

I collected every tech with nightcrawler and didn't get the achievement, I did get Wolverine's and Ice Man's... is there a way to fix this?

[Entity]

To my knowledge, there is no glitch. You are most likely missing one of something. If not, just try looking for a tech again, and if you find just one, it might unlock (in case you picked it up but it did not save).