Full list of all 44 High On Life achievements. It takes around 20-25 hours to unlock all of the achievements in the base game on Windows.
The base game contains 32 achievements, and there is 1 DLC pack containing 12 achievements.
Use Sweezy to boss around the Office Moplets.
Unlock every post in the Bounty Hunter forums.
Find and open every Luglox chest.
Collect every trading card in the game.
Sit through the entirety of the really annoying countdown show on TV.
Unlock and explore every collectible warp base.
Discover Dr. Gurgula's hideout in the Human Haven.
Discover the movie theater.
Sacrifice a Gatlian other than Kenny during the fight against Garmantuous.
Defeat Dr. Giblets.
Complete the game with Stan's product in your inventory.
Defeat Garmantuous and take down the G3 cartel.
Say goodbye to Suit-O.
Obtain Lezduit.
Defeat Nipulon.
Spend 15 hours at the very real in-game alien strip club.
Obtain the Jetpack.
Obtain Creature.
Defeat the Skrendel Brothers.
Pop 20 Grunt eyeballs.
Watch Globo's rise to fame.
Pay your bill at Applebee's.
Defeat Douglas.
Obtain Sweezy.
Obtain the Mag-Boots.
Obtain Gus.
Defeat Krubis.
Take Knifey's advice and stab Gene in the gut.
Defeat 9-Torg.
Obtain Knifey.
Juggle an enemy in the air with at least 5 shots.
Kill Slumsley.