Here is the full list of all 43 Razenroth achievements.
Buy 50 items
Buy 20 items
Kill Evil Tree
Buy all available things for the hut
Collect 1000 pieces of gold
Open 30 chests
Unlock Treant
Complete the game on hell difficulty level
Kill Wind Titan
Kill 20 mini bosses
Buy 1 item
Find magic apple
Drink 50 potions
Kill Shaman
Collect 500 pieces of gold
Complete 5 quests
Kill 1000 monsters
Unlock Skeletor
Kill Ro'gnar
Kill Meat Monster
Complete the game on any difficulty
Complete the game on hard difficulty level
Unlock grandpa
Unlock golem
Open 15 chests
Find Phoenix altar
Kill Flameclaw
Kill Killer Plant
Unlock Fire elemental
Kill Goblin Sapper
Kill 500 monsters
Destroy 500 environment elements
Open 5 chests
Collect 200 pieces of gold
Kill 5 mini bosses
Buy new thing for the hut
Kill Spectre
Kill Swamp Thing
Kill Gruu
Kill 100 monsters
Destroy 100 environment elements
Kill Mud Monster
Destroy 50 environment elements