Here is the full list of all 30 Vertical Drop Heroes HD achievements.
Gain enough experience to reach Level 21.
Collect 12 Pacifist Orbs in a single level.
Complete any level in split screen multiplayer mode.
Kill 150 enemies in a single run to unlock the Reaver: slay your enemies and absorb their souls!
Jump into electrified water to get this achievement! But seriously, don't even try this in real life.
Purchase any 5 unlocks to gain a Crossbow: nail your enemies to the wall!
Complete a level without triggering any alarms in single-player mode.
Complete a level without using any Skills or Powers in single-player mode.
Open a door blocking a Portal before the Boss of the level is defeated. You'll need five keys.
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.
Unlock a Green Crystal, skip at least one level using the Teleportation Shrine, and go through the Portal in the Temple of Knowledge.
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.
Defeat 25 Goblin Spearmen.
Rescue a friendly hero from a cage. You can either use a key or find a way to break the cage.
Use a blue teleporter to return to the top of the level.
Purchase any 20 unlocks to gain a Pickaxe: dig your way to the depths of the dungeon!
Purchase all 50 unlocks to gain a Katana: hack and slash your way past your enemies!
Complete a run in Normal mode to gain a Warhammer: smash your enemies into the scenery!
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!
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!
Upgrade the Apothecary, Blacksmith, and Pacifist Monk to level 10.
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.
Summon a Dragon. ROAR.
Walk into a Cave Spider's web.
Break yourself free after being frozen by an Ice Bolt by repeatedly pressing Jump.
Activate a Shrine of Frost, a Shrine of Flames and a Shrine of Sparks in a single run.
Open a total of 20 Treasure Chests in a single game. Breaking open the chests also count.