Here is the full list of all 29 Knights of Braveland achievements.
Upgrade 3 of your hero's starting equipment to max. level
Upgrade 3 of your hero's starting equipment to level 1
Defeat the Skeleton King on Veteran difficulty
Defeat the Kraken on Veteran difficulty
Upgrade any hero's starting equipment to level 1
Buy 60 starter bonuses
Defeat Big Omnom on Veteran difficulty
Kill enemies with an empowered strike 200 times
Buy all starting bonuses 1 time
Defeat the Skeleton King on any difficulty
Kill enemies with an empowered strike 70 times
Win 3 battles in a row without taking damage
Defeat the Kraken on any difficulty
Dodge 150 attacks at the last moment
Pick up 2500 dropped coins
Pull Success or Big Success 5 times in one raid
Pull a Gap or a Big Gap 5 times in a single raid
Kill enemies with an empowered strike 10 times
Pick up 1000 dropped coins
Defeat Big Omnom on any difficulty
Dodge 50 attacks at the last moment
Hit 4 enemies with a grenade
Kill 10 enemies with a secondary weapon shot
Kill 5 enemies with traps in one battle
Defeat Fromm on any difficulty
Dodge 10 attacks at the last moment
Pick up 150 dropped coins
Buy 1 starter bonus
Defeat Barry Ax on any difficulty