Here is the full list of all 35 Half Minute Hero: Super Mega Neo Climax Ultimate Boy achievements.
Cleared Hero 3.
Cleared Hero 300.
Reached every ending in Hero 30.
Cleared Hero 30.
Cleared "Cursed Hero" without defeating Sasha.
Allied with all available NPCs.
Offered a total of 3000G to the Goddess in a quest in single player mode.
Beat the first 9 levels of Hero 30.
Eat 10 types of food.
Obtain Barrel Armor and Barrel Head
Get a companion to join you.
Ride a ship.
Prayed to the Goddess for the first time in single player mode.
Play a multiplayer match with a friend
Record a time on the leaderboards.
Play online multiplayer.
Win a multiplayer match.
Became 30 times the True Hero in multiplayer mode.
Cleared Hero 300 in Hard Mode.
Got all available equipment in single player mode.
Received every title.
Defeat Larrie and beat Level 4 in 27 seconds or less.
Beat every level under the target time.
Beat the final boss of Hero 30 using the Wood Sword as a weapon.
Beat the first five levels of Classic Evil Lord 30
Beat Classic Evil Lord 30
Beat the first five levels of Classic Princess 30
Beat Classic Princess 30
Beat the first five levels of Classic Knight 30
Beat Classic Knight 30
Play a multiplayer match with 3 other friends.
Defeat any three Evil Lords wearing no equipment.
Defeat any five Evil Lords with one hit.
Beat Hero 30 without using herbs to heal.
Get all achievements in the game.