Helldivers 2 is a great, action filled game with lots of progression and fun to be had. It is constantly updated and has an amazing community contributing to it. The multiplayer is almost flawless, and the controls are great.
The weapons are very creative, and very balanced too. Battles are always unique and chaotic, or easy short because of the wide variety of difficulties. From small bugs, to armored robots, the game has thrilling combat that keeps you engaged and focused. Stratagems are also a very creative way to make battles more strategic and in-depth. Every map is unique and every mission is a new, fun battle.
The micro transactions are ACTUALLY micro! These payments are also completely optional, and you can earn everything in-game yourself without spending a penny after the initial game price. I would recommend playing this, and I will not stop any time soon!