The only reason it gets two stars is because of the banter between allies and characters developing. The rest of the game is absolutely garbage. They will have missions that have 8-10 parts that require nonstop bouncing back and forth to planets without the ability to quick travel to the planets.
Tedious missions would be putting it lightly. The planet searching sucks and often gives nothing worth even scanning the anomalies. The research and development was OK but lacked any substance. By the time you upgraded a rifle and did a few missions, you'd have to upgrade more by scanning every stupid thing under the sun. If your a completionist, it will take up many days to beat fully.
Wouldn't recommend to anyone who played the originals. The story is sub par two new alien species and thats really it. Sloppily put together and the main character is a chode compared to Shepherd.