I beat Balteus. Man what a fight... so fast-paced and intense. You need to manage stamina and get used to the attacks like in Souls games and dodge at the right time. It's like Souls mixed with Ace Combat -- a lot of flying around, dodging missiles, and struggling to get a lock on. The music is amazing, not a style commonly found in the games I play. Honestly I found Balteus to be easier than Juggernaut.
I beat the sea spider boss. Looking forward to what comes next. The visuals in the sunset missions, when my mech is standing outside, are very impressive, the lighting is realistic. And the various parts and weapons have some really badass designs, an excellent incentive to replay missions. I painted my main mech like the Eva 02. I love this game!