Awesome game. I haven't played an AC title in almost a decade. I'm not sure how everyone is hung up on the first boss. Beat it on the second attempt pretty easily. After that, you start having part options you gain per level/arena as you proceed through the game. Just keep in mind, "stronger/heavier" isn't always better than mobility depending on the situation. It's definitely challenging as you need to employ your entire moveset/firepower effectively depending on each mission. If you like mech games this is a must have