The late game is obviously rushed, everything after Leyndell is mediocre and the bosses are especially bad. Malenia, Fire Giant, Godskin Duo, Maliketh, and Elden Beast are all pretty bad bosses.

The constant repetition of bosses elsewhere really detracts from them as a whole, with probably 90% of the bosses in the game being repeated at some point. There are literally zero non-repeated bosses in all of Limgrave and the Weeping Peninsula.