Rule: No reality warping or omnipresent based abilities in  this scenario.

The superhumans just randomly came out of a portal one day, similar to Invincible War. The superhumans have diverse abilities like the X-Men or My Hero Academia. Meaning the abilities are extremely diverse. You can have superhumans with powerful abilities like Vector manipulation. While you also have superhumans with useless abilities like chocolate spit.

The superhumans make up one percent of the global population in this scenario. As for strength and speed. The lowest tier of strength is Watchmen Comedian levels of strength. And the highest tier of  strength is Homelander levels of strength. Lowest tier for speed is Agent 47. And highest tier for speed is Atrain. Lowest durability is MCU Flagsmasher Super Solider level, and highest Durability tier is Yujiro. 

And of course tier 0 for superhumans who have strength/speed/durability on par with an average human.  Albeit those physically weak superhumans can still have OP haxs though.

Note not all the superhumans will be evil in this scenario. But due to this rip in the multiverse. It causes the most dangerous superhuman prisoners to escape from their world prisons. And cause chaos in our world. And also due to a combination of discrimination and cautioness. Even innocent superhumans won't be trusted.

Now the biggest advantage for our world in this scenario. The superhumans have a Kryptonite-like weakness, that is a instant kill on any superhuman. Doesn't matter how powerful their durability or healing factor is.

But how our world is able to find out about this Kryptonite-like weakness is the biggest challenge in this hypothetical though.

Can our world survive a superhuman invasion under these circumstances?