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