Parnell excels at close range health nuking. He is the top burst damage choice in my opinion, other than Torvald. But even still, both of these assaults have their counters.
Perk choices, tend to be Capacity… It’s amazing burst damage, with that many rounds in SS.
Parnell has amazing burst with headshots/weakpoints. With a Val/Laz, he can be a beast… Add in Cabot, and you have ridiculous burst. If the monster engages you, (bar that damn Kraken…) you will usually get headshots easier. This increases damage even more. Think of him as the rage trooper he is. He gets in your face, and he destroys bars of armour. As the monster, avoid facing him… If you engage him without knockbacks, expect to hurt yourself.
He can be countered, by sprinting away during the SS, or knocking him back. You can also pounce him, depending on how the other team members are handling the fight. Anything to interrupt his most valuable tool, which is his cooldown.
With Parnell, you need to learn when to use your cooldown. The wrong time, could cause you to waste it. Or, it could even cause your death… You must learn to conserve your jetpack, because you need to keep on the monster. If they avoid you well, you’re going to do the lowest damage in the assault tier (bar Markov without mines). If you can’t aim, you’re going to have a hard time as well. If you hit his arms/legs, or miss completely, you’re going to notice little to no damage. As well as this, you need to know when to use your rockets. They aren’t that great, but they have their uses. I tend to use some between reloads, and when the monster is out of shotgun range. Spread really hurts damage potential on his shotgun…
Arms/Legs result in .5 damage I believe. You half your shotgun damage.
Body is 1.0 damage, and this results in normal damage.
Headshots are 2.0 damage. With SS, you can easily burst through this, with double your normal damage.
If you end up being countered, or you can’t land these requirements, Parnell is not for you. He’s the hardest assault to play right now. He has quite a few drawbacks, and requirements. He does have a very high damage potential though, making him fun, and effective to play at times.
Currently though, don’t use Parnell if you have a Slim on your team. He ends up canceling your SS, and it gets annoying… Every time it’s shut down, that medic has been on my team.