This is the best explanation I could come up with, as it makes sense for every lyric in the song:
It seems to me that the narrator is a mercenary that wrongly believed themselves to be acting ethically. They were blindly following orders, believing they were doing the right thing. However, when they actually saw their victims (who were rejoicing in the rain, thinking they had been saved), the blindfold came off and they realized that they were no hero at all. They were simply a fool that took orders and “never complained”. The mission they were on was to kill innocents. The line “tell the survivors help is on the way” are the words of the people controlling the narrator being mocked by the narrator. The line “I wanna leave but the world won't let me go” could be referring to how they feel deep remorse for their actions, but feel obligated not to leave the organization physically or via suicide, due to a contract that they are bound to.
This is the best explanation I could come up with, as it makes sense for every lyric in the song:
It seems to me that the narrator is a mercenary that wrongly believed themselves to be acting ethically. They were blindly following orders, believing they were doing the right thing. However, when they actually saw their victims (who were rejoicing in the rain, thinking they had been saved), the blindfold came off and they realized that they were no hero at all. They were simply a fool that took orders and “never complained”. The mission they were on was to kill innocents. The line “tell the survivors help is on the way” are the words of the people controlling the narrator being mocked by the narrator. The line “I wanna leave but the world won't let me go” could be referring to how they feel deep remorse for their actions, but feel obligated not to leave the organization physically or via suicide, due to a contract that they are bound to.