Stuck on which 2 games to get

IMO rent a few games, get the free games with gold and use the voucher in january on some good games people have returned.

I also agree with Angryvatos recommendations for games not on your list!

Black Flag for a ripping open world story, with a great mixture of land and sea based objectives, you don't need any previous AC knowledge. I have played them all and it's the best of the series (IMO)

Wolfenstien is pretty but essentially a standard FPS, nothing really exciting (IMO)

Enjoyed DR3 but found it a bit repetitive with a lot of fetch quests that meant criss crossing the map over and over, yes there are she'd loads of zombies but they don't really pose much of a threat, they are just fodder. I think the only time I died was
a boss battle and even then once you have a certain weapon they present no challenge.

I loved Dead Rising 3, a lot of fun. Much better than the previous ones in my opinion.

AC Black Flag is a great game if you like the pirate theme. Personally i never finished any of the AC games until i got Black Flag. I loved sailing around and attacking ships. Great game.

Wolfenstein i've just started, but it's really fun. At least for now It's a nice no brainer shooter game, with some macho attitude.

As for recommending other games:

Ryse (I know people don't think it's that great a game, but i don't regret buying it. Truly liked it. Awesome graphics.)

Battlefield 4 (If you like to play online it's a great shooter. But it's kinda the taste preferance. Some like fastpaced COD action, some like more simulation. )

Tomb Raider Definitive Edition (If you haven't played it yet, it's a good game. Worth it.)

Murdered Soul Suspect (A decent game. I quite enjoyed it. Although very short, and some quirks. But a decent buy)

Sniper Elite 3 (A big improvement on the last two. Fun and addicting. Also has Co-op which is always a bonus.)

It's basically a matter of what you like to play. Go on Twitch and search for the various games you want to know more about, take a look at people playing it and you get an idea if its for you or not.

Ac4 and dr3 are great choices IMO. There is a huge update for dr3 so you know. I had alot if fun with dr3 the amount of zombies and weapons customizations aw great. Story isn't amazing but I enjoyed the gameplay alot. Ac4 IMO is the best in the series so
far. You can read up on what you missed on the others if you wanna know where the story is at. I had last played the brotherhood (3rd one). So I just read up on the ones I missed worked out good.