The original halo games share next to no similarities, halo 5 shares more but that's because it tried to rip off destiny mechanics and failed miserably. momentum is all sorts of off I feel like I'm I'm trying to slide a brick through dirt. it's like an expanded version of that terrible power up in halo 4, the thing that was supposed to replace evade. the original games were polished because they didn't try and mimic another games mechanics.