Here is the full list of all 31 GOAT OF DUTY achievements.
Actually, your opponents will complete this achievement for you.
Win 340 matches in any mode.
Ram 25 opponents to death.
Hit an opponent 5 times with Ram or FusRoBeh without making it touch the ground.
Win 100 Team Deathmatches.
Send flying 50 opponents with the FusRoBeh.
Kill 25 opponents with the Zero-G Saws. (Alternative fire)
Win 50 Gun matches.
Kill 250 opponents with Explosions.
Win 50 Free For All matches.
Cook 50 opponents with the Roaster.
Slice 50 opponents with the Ripper.
Detonate 50 opponents with the Grenade Launcher.
Impale 50 opponents with the Impaler.
Kill 500 opponents with Headshots.
Kill 50 opponents with Headshots.
Explode 50 opponents with the Missile Launcher.
Snipe 50 opponents with the LightGun.
Also goats have their special place.
Win 50 FusRoArena matches.
Kill 25 opponents in a row without dying.
Nail 50 opponents with the Piercer.
Kill 10 opponents in a row without dying.
Push 50 opponents off a ledge.
"Don't move! He can't see us if we don't move."
Yes, we developers make achievements for you, bug-seeking goats.
Kill 101 opponents.
Goats bodies are not made for flight. But they dont' know that, so they try it anyway.
Bleat 100 times. (In this game)
Don't expect they will explode for real.
Ram an opponent and kill him midair.