Looking for a Valkyria Chronicles-like game

On phone, and I can't edit the flair, at least I can't figure out how. But its solved and I'm so happy. I can't contain my emotions, because I always had such fond memories of it, and now I can reunite with it.

I played it many years ago on a XBox. I don't know, maybe when I was twelve, thirteen, so around 2012. The story was that monsters have conquered the world, and few humans survived, and those have to fight for their lives now. The monsters were all blue, the weakest of them had no attack but suicide bombing. You start with a father and son, who have guns, but can also melee attack. You had a radius you could walk, I think it was one tiny orange circle, and a bigger blue one. While moving in oranges area, you'd receive no penalty, but if you walked more, you couldn't move as far as normal next round. Anyway, pretty early in the game, they find the sister of the protag (the sister would throw bombs), but then the father dies. The two then met a big bulky guy who could airstrike the map with his gun. I can't make out much anymore, there was a roboter that could doublejump, and the endboss were glowing orbs, which were on the cover art also The graphics were rather cartoony, but the overall tone was dark, you had your grass piles, but mostly wasteland