Bugs (stuttering in cutscenes, game saying there are enemies around when there is none etc.) and missing features (especially something basic like chapter selection and new game plus mode missing) aside, it's a pretty decent game.

Kind of reminds me of Halo CE not only in terms of art and level design and overall tone of the game but also in a sense that it feels like a good foundation for something great that will come in the future. Whether that "great sequel" (or campaign expansion) comes or not, we'll have to see.