Beat Wolfenstein. It's pretty fun and has some good ideas for replayability after a 10 hour main run. Basically in the first level, based on the choice you make, you can play through the game by collecting health upgrades, or shield upgrades, depending on who you chose. So when you beat the game with the one choice, you can go back and do the second choice and get the upgrade set you didn't get the first time, so buy the end of the 2nd run, you'll have double health and shields. That choice also means you have an entirely different character to interact with throughout the story. Haven't experienced that yet, but it will be pretty cool when I get to that point as the characters are pretty memorable.
Also there are enigma codes to find that you then decipher once you have a full line of them unlocked. Completing these gets you new game modes to play the game with. The first one I have unlocked which is 999 mode. 999 Health, unlimited ammo, and it's on the hardest difficulty. Not sure of the rest yet.
I like how they did the choice idea as it not only gives you a separate character throughout the entire game instead of the other, you even get a different lock pick option this time around. With one character, you hotwire things and with the other, you lock pick things which is a different mechanic. Kinda cool.
Also, a fun little bonus easter egg you can find in the game is that you'll play a version of the first level of the original Wolfenstein lol