Here is the full list of all 43 The Curse Of Mantras achievements.
Ace & Alpha Romance CG
Ace & Angel Romance CG
Ace & Angel Alternate Romance CG
Ace & Aquaria Romance CG
Ace & Aquaria Alternate Romance CG
Ace & Ash Romance CG
Ace & Ash Alternate Romance CG
Ace & Cyberia Romance CG
Ace & Cyberia Alternate Romance CG
Ace & Gambaron Romance CG
Ace & Gambaron Alternate Romance CG
Ace & Iszeria Romance CG
Ace & Iszeria Alternate Romance CG
Ace & Kraken Romance CG
Ace & Kraken Alternate Romance CG
Ace & Magma Romance CG
Ace & Magma Alternate Romance CG
Ace & Mercurio Romance CG
Ace & Mercurio Alternate Romance CG
Lily & Alpha Romance CG
Lily & Alpha Alternate Romance CG
Lily & Angel Romance CG
Lily & Angel Alternate Romance CG
Lily & Aquaria Romance CG
Lily & Aquaria Alternate Romance CG
Lily & Ash Romance CG
Lily & Ash Alternate Romance CG
Lily & Cyberia Alternate Romance CG
Lily & Gambaron Romance CG
Lily & Iszeria Romance CG
Lily & Iszeria Alternate Romance CG
Lily & Kraken Romance CG
Lily & Kraken Alternate Romance CG
Lily & Magma Romance CG
Lily & Magma Alternate Romance CG
Lily & Mercurio Romance CG
Lily & Mercurio Alternate Romance CG
Collect 100 Unique Cards
Unlock the bad ending requirements
Unlock the good ending requirements
Defeat Mantras and Unlock The Special Ending
Win all the realm battles in the game
Lily & Cyberia Romance CG