Here is the full list of all 11 Take Thy Throne achievements.
Kill 100 Golems
Kill 50 Dragons
Capture 20 flags in CTF
Win 15 games of Take Thy Throne
Buy 70 Items from the store
Slay 10 Kings at your own hand
Mine 80 Ores
Chop 80 Trees
Take down 20 Towers
Kill 100 Players
Play during Halloween