I f(u)cking DID this, completed the Spec Ops_The Line game on the FUBAR difficulty.
Steam version, 100% Achievement completion - April, 2025.
GoG version, 100% Achievement completion - December 2019.
Retail version, 100% Achievement completion - Early 2016.
And that doesn't mean I completed Spec Ops_The Line on FUBAR difficulty only 3 times!
P.S. It is always better to fight against bots and/or other players in any PC/Console game than to fight to death against each other in real life.
P.S.S. Otters already have their special ambience, fun, and food ʕ•́ᴥ•̀ʔっ https://www.youtube.com/watch?v=kpzAnEWhIqA