At the start of a match, just use the Mines like Maggie’s Harpoon Mines: spam them when you are moving and don’t know the Monster’s exact location (also when you’re not being attacked) that way, you’ll have a bunch of mines behind you to retreat to if things suddenly go wrong.
If the Monster’s in your face, switch to offensive Mode. If the Monster is somewhere in the dome, set up Mines, but when you hit 5, use the Lightning Gun to autofind a Monster if it’s chilling in the bushes.
I personally go for Reload Speed on him for the Lightning Gun and Mines.
Val: (I’m 31 with her on Xbox)
High places are your best friend. Always set up high and basically have your Tranq Dart out if you aren’t engaged with the Monster.
There is a triage with her quick swap playstyle:
1: Is everyone topped off? If not, heal. If your Medgun runs out or everyone is healed, see 2.
2: Tranq the Monster every 10 seconds. No reason to hit it again and again, I don’t believe it extends the duration like Abe’s Tracking Dart. The reload animation is a little weird, so it might show it as full, but not allow you to fire.
3: Create weakspots when the above are done. Alternate between 2 every few seconds and 3 when the Monster is not tranq’d.
I personally prefer Jetpack Recharge on her, because of her lack of survivability. Management on her is super important, and try to stay at the back of the pack. Leave some fuel in reserve for a quick dodge.
He is my favorite Trapper, still.
The magic number on Sound Spikes is 120. Look on a spike after you’ve set one down and you’ll see the distance to nearest spike on the actual item. It will turn green around 90. 120 is the best number, because his radius is 60m and there is no benefit to overlapping spikes.
In combat, use the SMG when the Monster is in your face and the Harpoon Gun when it is focused on your Medic/teammates. You have to learn the Monster’s reaction patterns. Traversals need a bit of timing to get used to.
You can Jetpack backwards once the Monster is snagged. Use this to put yourself in a better position. Try to stay opposite of the Medic. This forces the Monster to either get Harpooned or to focus on you (which reduces pressure on your Medic), since you’re in different directions.
I personally run Reload Speed on him to Harpoon a split second faster.