Here is the full list of all 43 Goobies achievements.
Kill 2 500 Elite Giants
Kill 5 000 Giants
Kill 50 000 Elite Blobs
Kill 10 000 Elite Runners
Kill Bacharach 50 times
Kill Ulla 50 times
Unlock the artifact Yocto
Unlock the artifact Cracked Heart
Unlock the artifact Blob Roulette
Unlock the artifact Abnormal Autopsy
Unlock the artifact Tinctured Glimpse
Unlock the artifact High Tide
Kill Blobby 50 times
Unlock the artifact Cursed Capsule
Unlock the artifact Sign Of Time
Unlock the artifact Zigrids Last Wish
Kill 15 000 Exploders
Kill 7 500 Ticks
Kill 10 Amams
Unlock the artifact Wrath Of The Elder
Unlock the artifact Pixel Perfect
Unlock the artifact Gilded Handle
Unlock the artifact Double Trouble
Kill 10 Zigrids
Kill 10 Gaias
Unlock the artifact Full Spectrum
Unlock Hoozey Woozey
Unlock the artifact Symbol Of Pain
Unlock the artifact Blobmoon
Kill 25 000 Spiders
Kill 10 Magmus
Kill 10 Mumsa
Unlock Spinky Winky
Unlock the artifact Blobbath
Kill 100 000 Blobs
Unlock the artifact Mutated Gene
Unlock Dizzy Wizzy
Unlock Bingus Bongus
Unlock the artifact Circle Of Self Control
Play Goobies for the first time
Unlock the artifact Pulverization
Kill 50 000 Runners
Kill 15 000 Elite Spiders