Earth Defense Force, the fifth one especially that crank this trope up to eleven
>start the game as a new recruit in still civilian clothes and for a couple of missions
>follows the steps of Sergeant Ranger and his squad
>finally get your military EDF gear and get a little praise from your ranger companions. This is also where you can start freely recruiting NPC squads to follow you
>you're sent on risky missions and manage to accomplish them despite the odds, you also meet new recurrent squads such as the Spriggan Wing Divers, who act like a snob to you, and the Grim Reaper Fencers, who are melee warriors seeking glorious death in battle
>finally get rid of the Gigantic Walker problem and get hailed as a hero
>but aliens arent taking shit from anyone so they start sending heavy reinforcements such as the Cosmonauts, Deroys, new drone types, giant boulder insects, flying frogs, etc to plummet the EDF al around the world
>situation is taking a terrible turn
>HQ send you, Sergeant Ranger, the Spriggan and Grim Reapers to retrieve the Balgam that were left out in the base (no occupied by alien forces) you escaped in the beginning of the game. The elite teammates start to recognize your value and respect you by this point, and all of you are now designed as part of the Storm Team.
>as the situation becomes more and more dire, with seemingly no way to win against the infinite alien forces, you still manage to pull out. You now become the savior and all the characters get your back on the last battles