Try and stand in the middle of the lane at all times. This will make it harder for her to land her E in a trade. Don’t get close to the walls as this will give her the opening to engage.
If you’re playing as a ranged champion, try and harass Camille with basic attacks whenever she tries to last hit. Camille lacks sustain in the early game, so you can poke her out of lane easily if you keep auto-attacking.
If Camille uses her E in lane, she will be vulnerable while it’s on cooldown as it’s her main way of disengaging from ganks. Bait out her E prior to your Jungler arriving in your lane to reduce her chances of survival.
Try and stay closely grouped as a team when playing against Camille to make it very hard for her to engage. Camille will want to lock down an isolated target with her Ultimate R, but by standing close together it will reduce her ability to do so.
Camille will often hunt vulnerable targets who are isolated walking around the map. Stick with your team to reduce Camille’s assassination attempts.
In addition to grouping closely, Camille cannot easily get on to the backline by running at the enemy. Instead, she will try to flank from the side. So whenever you’re sieging an objective or fighting in a lane, make sure you have sufficient ward coverage to the sides so you can spot her before she engages.
Camille may look for an all-in at level 3 or 4 once she has access to her core abilities. Try and not lose too much health prior to hitting level 3 otherwise it is guaranteed that she will look for the all-in.
Whenever Camille has her E available, you need to be careful with your positioning as it will provide her with an opportunity to engage if you’re stood by a wall. Stand in the middle of the lane as much as possible.
At level 6 Camille will gain access to her Ultimate R which can be deadly if you’re low and overextended. Respect her all-in and do not push without vision as her Ultimate R can also be used to set up her Jungler.