Following are a number of back-translations as well as a sample translation for translators of Joel 2:9:

• Kupsabiny: “They are raiding (the/a) city
  and running over/on the walls.
  (They) climb houses until (they) enter inside.
  (They) sneak through a window like thieves.” (Source: Kupsabiny Back Translation)
• Newari: “They will attack the city,
  They will run on top of the walls
  and they will enter through the windows of houses
  like thieves.” (Source: Newari Back Translation)
• Hiligaynon: “They attack the city and climb-up/go-up its stone-walls. They climb the houses and they enter/go-inside through the windows like a thief.” (Source: Hiligaynon Back Translation)