How do you unlock the 'Drip' achievement in How to Fish?

The 'Drip' achievement unlocks when you catch and defeat any rare Drip variant creature, such as the pink Drippy Urchin or fish wearing sunglasses.

How do you unlock the 'I'm the bird now' achievement?

Let a giant bird or seagull grip the edge of your boat with physics interaction and lift your entire boat into the air.

How do you unlock 'Everyone's dream' achievement?

Kill an aggressive seagull using thrown dynamite.

How do you unlock the 'Deadliest catch' achievement?

Listen for the military radio event announcing a 'big creature located', then help defeat the giant ocean Shark boss.

How do you unlock the 'Handyman' achievement?

Defeat the final island boss using only your bare hands without firing weapons.

All Steam Achievements — How to Fish Game Wiki

Completionist

All 28 Steam Achievements

Track your progress and unlock everything in the game. Below is the complete list of all official achievements along with their unlock conditions. How to Fish officially ships with 28 Steam Achievements (confirmed on the Steam store page), including the casino-themed "All in" (bet on green and win at roulette) and "GOLD GOLD GOLD" (unlock a legendary skin from the slot machine).

Where to start? A sensible unlock order

Most achievements come from just playing the game normally. If you want them in a clean sequence, follow the island order instead of farming random ones:

Island 1 (survival basics): Getting started, Noob, Grillmaster, Dinnertime, Getting an upgrade, Who stole my beer
Island 2 (first boss): Drip, Let me go, Impressive, 360 no scope, Yummy in my tummy, Fully equipped
Island 3 (final stretch): Vacation, I am speed, Terrorizing bird, Competitive eating, I'm the bird now, Deadliest catch, We are so back
Endgame cleanup: Easy, Collector, Rich! Millionaire, Everyone's dream, Handyman, Fishipedia, All in, GOLD GOLD GOLD

Easily missed: Everyone's dream needs you to blow up a seagull with dynamite (save one throw for the birds), and Handyman forces a bare-hands final boss fight — do them on purpose before the natural finish.