Mechwarrior 5 mercenaries with mods that add lots of lore-accurate content and additional equipment/loadout options.
I’m just starting to get some of the bigger mechs, and the carnage is epic and loads of fun. The short missions are also great for me as a busy father.
I second that opinion. It seemed shallow and easy at the beginning, but turned out to be a really entertaining and challenging game. I also love how the characters age, develop, and eventually retire.