Endless Fun

Endless Fun is an achievement in Halo Wars that is unlocked when you destroy every methane tank ^[1].

Sources

Achievements in Halo Wars (list)

Campaign	Adjudicate The Arbiter • Detour The Great Journey • Momma's Boy • Crushed Colors • Mr. Punctual • Own Worst Enemy • Wall Of Recognition • Epic Grinder

Campaign level medals	Everything's Better With Bacon • Endless Fun • Covenant "Hot Drop" • The Real Winner • He's Got The Jack • Rhino Hugger • Micro Manager • Ramblin' Man • Sweet Naptime • The Procrastinator • Battened Down The Hatches • Handy With Tools • Beaming With Pride • Didn't Get To Second Base • Thinkin' About My Doorbell

Co-op campaign	Backscratcher • OMG BFF FTW

Skirmish	Playin' The Field • Gallivant Around The Galaxy • Empire Builder • Titan • Big Al's Scooter • My Virtual Friends Love Me • 2 Bugs Are Better Than 1 • Penny Pincher

Multiplayer	N00b N0 M0r3 • So Lonely At The Top • Basically Naive • Officer On Deck • Running The Show

Strategic Options pack	One and Done • Pull Hard, Pull Deep • Freak on a Streak • Living Loving Bug

Historic Battle map pack	Tour Coming Through • Never Leave a Man Behind • Drain Cleaner • Killjoy

Other	Walk-Off Winner • Alas, Poor Andrew Thomas • Graverobber • Halo Academic • Halo Historian • Ready For The Sequel • 24 Hours Of Quality

Secret achievements	Meet Sergeant Forge • Ice Warriors • Key To Pirth • Ugly Is Only Skin Deep • No Way Home?