Halo 5 is the lowest rated Halo game of all time, which is disappointing. ( Only counting the core games of course)
Halo 1 Metacritic score - 97
Halo 2 Metacritic score - 95
Halo 3 Metacritic score - 94
Halo Reach Metacritic score -91
Halo 4 Metacritic score - 87
Halo 5 Metacritic score - 86
Halo 1 Metacritic score - 97
Halo 2 Metacritic score - 95
Halo 3 Metacritic score - 94
Halo Reach Metacritic score -91
Halo 4 Metacritic score - 87
Halo 5 Metacritic score - 86