This game is very enjoyable. Very well done in term of graphics and music.
However, being a game with storytelling, it needs more focus on that. I mean, since you start the game you follow a story, there are several side quests that takes you more than the main history and there are several multiplayer mode that level up your characters that also works for your story mode. What I meant, it is that I spent 50 hours in this game and only got 22% of all trophies and to get 100% I do not know what to do and how long I need to address there. There are a lot of player level 50 and I am cap to 20 never explained why unless you google it.
Beside my comment, this game is great. I think it took some of warframe style and mixed that with a normal shooter. There is a large community which makes fun to play it multiplayer. Most of the players are max out to 50 (600), however, you can beat them with a little of patience.
There are missions and challenges that even though I max out where I could and I am not strong enough to beat that missions. It is like you are force to upgrade the game in order to get increase your cap and be able to beat that missions later.
Well, my recommendation is: if you are a going to play this game, buy the ultra complete edition. If not you will feel that you are not playing a complete game.