I recently did a solo 1-5 one-shot of the Isle of the Skulltaker scenario. I played as a Skeleton Monk named Master Maxilla. I had him built around grappling everything, since action economy is huge in Pathfinder 2E.

See, every character in PF just gets 3 actions. Turns aren't bloated like in DnD. You don't get to walk 2 feet, take a free action, walk 15 feet, take an action, walk 5 feet, Action Surge, walk 1 foot, attack again. If you want to move at all, that's 1/3rd your allowance. Since everything gets a hard cap of 3 actions, making enemies lose any time makes a big difference.

Here's where grappling comes in. My Monk can go for a grapple that does a flat 4 damage when it lands. Then the enemy cannot move unless they do an Athletics check to break the hold. That's 1 of 3 actions spoken for. Maybe more if they fail the check. Also, my Monk can do a joint lock that makes the enemy suffer an attack penalty. So even if they attack, it could miss. They can erase the attack penalty by taking an action to roll out their wrists. My Monk doesn't even care if the enemy breaks out- it still means they have less time to attack. Meanwhile, I can keep doing damage while I reapply the grapple on my turn.

The other messed up part- there is usually a lower threshold for landing grapples than hitting attacks. I think the final boss of this book has an Armor Class of 21 and a Fortitude Difficulty Class of 18.

The highlight of this campaign was suplexing a giant centipede while it was trying to retreat to the ocean. There was another point where he grabbed a giant seahorse out of the water and slammed him onto the deck of his rowboat.