Inara can hide her Warden's field behind the wall (I do this often too with her). This can surprise you and get you in trouble especially if she's using the cripple card. She will take the wall down and you stay crippled exposed to enemy team.
It's tempting to rush a Grover, but unless isolated, he can sustain long enough to survive the fight. Be sure to close the distance between Grover, but prioritizing cauterize will finish the exchange much faster.
Watch out for Mal'Damba players, their stuns can be the end for you. Make sure to get resilience if you plan on taking them on alone to make the stunning as weak as possible. Until you get at least resilience 2, stay away from them.
Lian, contrary to most damage dealers, is food for most tanks. An aggressive tank like Fernando or Ash essentially have her on a guaranteed death timer the moment they press F, and defensive tanks like Barik and Ruckus outdps and destroy her.