Files that was added to .ai file are absent. It's hard to understand created brief without additional files, you should to add all used files in zip folder. After that - it'll be possible to offer needed solution. Thx 4 your attention.

Main screenshot that represent the reference of needed edits is absent

the main pic is missing in Super Trench Kings.ai

Ive uploaded the main picture. I am not sure why it didnt upload.