Gamespot:
Right from the landmark battle aboard the UNSC Pillar of Autumn, the Halo franchise has almost always been a team effort, even though Master Chief has done most of the heavy lifting in the mainline series. That's where all the spin-offs and novels come in. As the follow-up to Vanguard Games' Halo: Spartan Assault, Halo: Spartan Strike is not only a spin-off, but also a top-down shooter that reinforces the notion that Halo need not be limited to the first-person perspective. From a continuity standpoint, Spartan Strike takes bigger risks than Spartan Assault, setting reprisals from Halo 2 while giving more screen time to the Prometheans, who weren't introduced to the series until Halo 4.
With the latest update for the IOS games of Halo: Spartan Assault and Halo: Spartan Strike Xbox services have been added including achievements for both titles.
TTP:" If you have wanted to try out Halo: Spartan Strike before but haven’t done so already, you will be happy to know that the game is now available for a reduced price on the App Store."
Halo fans looking for a quick fix of Halo delights might be entertained by what Spartan Strike has to offer, yet if you’re looking for some form of Halo 5: Guardians tie-in, original narrative, cooperative play or enhanced gameplay over the previous offering, you might be disappointed.