Overall really great game. I give it a 7.5/10 because the story isn't anything ground breaking or special and the gameplay loop gets a little repetitive after a while (door is locked, go around map getting keys to unlock door, fight boss, rinse and repeat) but the combat is absolutely incredible and chaotic in the best way possible. Oh and obviously Space Dad and Space Daughter's dynamic and banter is a massive highlight.
Definitely has a little bit of a learning curve since you have to focus on the hacking as well as your surroundings so you don't get spanked, but it was still incredibly fun.
As for the platinum I'd give it a 5/10 in terms of difficulty because of Lunatic mode. It's not THAT bad but it is still pretty difficult if you haven't gotten a good groove of the combat. Only times I really struggled were Garden Keeper Boss and the Final Boss.
Capcom please for the love of all that is holy, give us Dad Space 2...