Sounds good but I usually double the time it's said to complete the main story because I take my time when im playing the game, want to do everything that's possible before advancing the main story. Rise of the Ronin is listed at 72 hours for completionist on howlongtobeat but im already at around 85 hours and will probably be around 100 hours once I wrap up the game and that's with me fast traveling a lot.
Back to Stellar Blade, im expecting a 50+ hour game for me total which is perfectly fine by me.