There is no guide for this game yet. But apparently it is EASY POINTS!  

Cockatrice - 5 points

Ride the cockatrice.

Omni Character - 10 points

Play as every character.

Turtle Village - 10 points

Choose any character and reach Turtle Village (Stage 3) without dying once.

Amazon Magic - 10 points

Perform the Level 6 magic attack with the Amazon.

Dwarf Magic - 10 points

Perform the Level 3 magic attack with the Dwarf.

Barbarian Magic - 10 points

Perform the Level 4 magic attack with the Barbarian.

Potion - 15 points

Collect three potions from a thief or party of thieves.

Survivor - 20 points

Choose any character and reach "Across the Sea" (Stage 5) without dying once.

Co-op Win - 15 points

Beat the game in local Co-op mode.

Online Co-op - 10 points

Complete an online co-op game.

Win - 35 points

Beat the game.

Perfect Win - 50 points

Beat the game without continuing.