Here is the full list of all 30 Vertical Drop Heroes HD achievements.
Summon a Dragon. ROAR.
Complete any level in split screen multiplayer mode.
Complete at least 3 levels in Pacifist mode on a single run to unlock the Bone Dagger: stab your enemies from behind for mega damage!
Complete a run in Normal mode to gain a Warhammer: smash your enemies into the scenery!
Upgrade the Apothecary, Blacksmith, and Pacifist Monk to level 10.
Break yourself free after being frozen by an Ice Bolt by repeatedly pressing Jump.
Open a total of 20 Treasure Chests in a single game. Breaking open the chests also count.
Purchase any 20 unlocks to gain a Pickaxe: dig your way to the depths of the dungeon!
Activate a Shrine of Frost, a Shrine of Flames and a Shrine of Sparks in a single run.
Complete a level without triggering any alarms in single-player mode.
Walk into a Cave Spider's web.
Kill 150 enemies in a single run to unlock the Reaver: slay your enemies and absorb their souls!
Gain enough experience to reach Level 21.
Jump into electrified water to get this achievement! But seriously, don't even try this in real life.
Defeat 9 enemies in a level while remaining in Pacifist Mode... for example, by using Swap when you are over a pit of spikes, or by letting rescued heroes do your dirty work.
Open a door blocking a Portal before the Boss of the level is defeated. You'll need five keys.
Unlock a Green Crystal, skip at least one level using the Teleportation Shrine, and go through the Portal in the Temple of Knowledge.
Purchase any 5 unlocks to gain a Crossbow: nail your enemies to the wall!
Collect 12 Pacifist Orbs in a single level.
Complete any of the mini side-quests given by an NPC in a level.
Keep a rescued Thief alive long enough for him to drop a Red Gem.
Rescue a friendly hero from a cage. You can either use a key or find a way to break the cage.
Complete a level without using any Skills or Powers in single-player mode.
Defeat 25 Goblin Spearmen.
Use a blue teleporter to return to the top of the level.
Purchase all 50 unlocks to gain a Katana: hack and slash your way past your enemies!
Achieve a score of 25,000 in New Game Plus to unlock the Musket Gun: blast your enemies to smithereens!
Complete the game 3 times to unlock the Infinity Sword: turn yourself into the ultimate Glass Cannon!
Complete a game in Normal mode without using the Teleportation Shrine.
Turn an enemy into a flying sheep... and then get rid of the sheep.