Here is the full list of all 41 RemiLore: Lost Girl in the Lands of Lore achievements.
Reach max rank in one-handed sword mastery
Reach max rank in two-handed sword mastery
Reach max rank in hammer mastery
Reach max rank in gauntlets mastery
Reach max rank in dual blades mastery
Reach max rank in staff mastery
Discover all one-handed swords
Discover all two-handed swords
Discover all hammers
Discover all gauntlets
Discover all dual blades
Discover all staves
Discover all weapons
Reach max rank for all weapons mastery
Reach max rank for all of Lore's spells
Accumulate more than 100,000 Dessert Points
Unlock Choux
Finish the game with an average rank of B or better
Finish the game with an average rank of A or better
Finish the game with an average rank of S
Finish the game using only one-handed swords
Finish the game using only two-handed swords
Finish the game using only hammers
Finish the game using only gauntlets
Finish the game using only dual blades
Finish the game using only staves
Perform more than 100 combos
Complete both Remi and Choux's Story Modes
Complete the game in Co-op Mode
Complete the tutorial
Discover Sutole for the first time
Discover Trea for the first time
Discover Nezev for the first time
Defeat Mark I
Defeat Mark II
Defeat Mark III
Defeat Mark IV
Destroy 100 enemies using Lore's spells
Destroy a training dummy
Wear the Bunny Costume and destroy an enemy using the Carrot weapon
Wear the Duck Costume and destroy an enemy using the Leeks weapon