The decorated 200+ year Vet represented the Ultramarines Chapter of the Imperium of man well in the first installment and allowed us to take on the invading Orks on the Forge World Graia. I think one thing that got me into that game were the personalities of the Orks, led by the badass... Warboss Grimskull. He isn't the only threat in the game either, you have to take on... traitors & daemons like The Warp.
Even if you jump into Warhammer 40,000: Space Marine 2... it wouldn't be a bad idea to check out the first installment. Part 2 picks up the story... years later. I won't hit you with spoilers when it comes to the way part 1 left off, but it definitely made me curious about how he would emerge in the next installment. Titus is now a lieutenant, and returns to the battlefield to face new threats with loyalty, duty, and freaking politics that don't make the fight against the forces of Chaos any easier.
I won't spoil it for ya, but it's once heck of an adventure that's worth playing. Here's a dose of gameplay via the first 30:
Game Modes and Features
Campaign: Follow the story of Lieutenant Titus as he battles the Tyranid threat across various planets. The campaign can be played solo or in co-op with up to two other players.
Operations (PvE): Engage in endlessly replayable PvE missions with up to three players. Complete auxiliary missions on six different maps with unique objectives and threats.
Eternal War (PvP): Participate in 6 vs. 6 PvP matches in three different game modes: Annihilation (Team Deathmatch), Seize Ground (Domination), and Capture & Control (King of the Hill).
Minimum PC Specifications
OS: Windows 10 (1903 min) / 11 64-bit
Processor: AMD Ryzen 5 2600X / Intel Core i5-8600K
Memory: 8 GB RAM
Graphics: 6 GB VRAM, AMD Radeon RX 580 / NVIDIA GeForce GTX 1060
DirectX: Version 12
Storage: 75 GB available space, SSD required