Besides a terrible gun fight which end in involuntary funnies the show keeps loosing its authenticity.
Money Heist always lived from its interesting plot giving the feeling all of this could actually happen. This is what made the show so interesting.
Gun fights etc were just used in climactic situations and as less as possible. But now, with an immortal maniac running around that deck of carts falls apart and the show goes crazy in a bad way.
As if Nairobi's suffering wouldn't be unrealistic enaugh, several characters escape their death so stupidly close that the whole show looses its authenticity. For example two of them survive a Granate in an elevator without any injuries!
With none, neither good nor bad being seriously vulnerable Money Heist dirfts into a cheap "die hard" like action movie.
And that's not what the show used to be.