Ok here is an honest review after watching first episode.
Action was great. Graphics was great for a TV Show. First 20 minutes was the best of the episode, but acting level could have been better still It was okish. Episode as a whole was enjoyable and there was many callbacks to video games in the first episode itself like Chief using Turret gun. Portrayal of the covenant was just great.
One major thing I didn't like was that they showed chief's face in the very 1st episode while his face is one of the biggest mysteries in video games, also dialogues were not that great and I also didn't like casting that much.
For this much budget, everything which I stated above could have been a lot better.
In conclusion, to make this show a hit writing needs to improve from next episode and i think it should not have been on paramount+, they should have done something to make this show available on more popular streaming services, this alone can be the reason for downfall of this show.