I liked it because it was yet another way to experience the Halo universe. Twin-stick shooters are more laid back and Spartan Strike (and Assault) are no different. Game was different to play compared to the mainline FPS games, but it still felt familiar. Lastly, the game itself was made well. Controls felt tight, enemies responded properly, levels played out as they should, etc. I had a few issues with achievements and game crashes that I was not impressed by, however. Problems the developers should have fixed became my headache to resolve.
