I'll be showing my way of doing 3-2. It's usually faster than the free fall strat and it's more consistent.

The Fall

First step is to jump from here, this is the earliest you can jump without landing on the small greyish tile. Also make sure to switch to dirks.

While falling, release the D-PAD for around 20 frames and land on the greyish platform down there. Then fall off of it.

Lastly, fall off the ledge and release the D-PAD for around 4 frames then keep holding right.

Jumpers' Patterns

One dirk while falling, another one on the ground next to the first jumper, then a full jump right after throwing the dirk, another one in mid-air for the second jumper and you're good to go. No need to pause here. This is the most common pattern for me.

One dirk while falling, another one on the ground next to the first jumper, then a full jump right after throwing the dirk, another one in mid-air for the second jumper, another full jump without bumping your head and finally a pause otherwise the second jumper will jump towards you.

One dirk while falling to hit the first jumper, a pause to cancel his jump, full jump then a dirk for the second jumper, another full jump without bumping your head then dirk as late as possible.

The best pattern, although it's not the most frequent one. Pretty self-explanatory.

And that's pretty much it, hope it makes sense.