Thor: Ragnarok - 20 WTF Moments

7. Hela Doesn't Know About Gungnir

When Heimdall steals his sword and permanently closes the bifrost, he presents Hela with an unfortunate problem, stranding her on Asgard when she has designs on the other Nine Kingdoms. So she decides it's imperative that she quashes the rebellion and recovers the sword.

Only, she doesn't even need it. She seems to forget that Odin's spear - Gungnir (which she's seen holding at least once) - can open the bifrost, since it was used to do just that in the first Thor movie. And even if you try and claim that Gungnir wouldn't work without the Odinforce powering it, the Odinforce is wielded not just by Odin but by the ruler of Asgard, which is Hela when she takes over. So she should be perfectly capable of using it to open the bifrost.

Without a justification of why she can't, it just makes her look silly.