Forking the two weak pawns and looking for Nd4 maybe. I had to keep an eye on the back rank here. I could have given the king luft, but I wanted to attack more.
27. Rc2c4
Threatening the knight. I had noticed this (and also Rxc5) when I played Rd3.
27... Nc6d4
!? A fun little tactic! The pawn is pinned!
28. Qf3f4
?? Before this move I would have said that Black is doing well, but he still has a long task in front of him to prove anything. But, unfortunately this loses on the spot to a family fork.