Here is the full list of all 27 Cube Samurai: RUN! achievements.
Kill 250 Cone troopers using Meteor Slam
Pick up rocket shoes 100 times
Kill 100 Cone Troopers using deflect
Buy 30 pieces of cosmetic gear
Reach 7500 meters in a single game
Kill 500 Cone Troopers
Pick up rocket shoes 25 times
Pick up a Magnet 50 times
Buy 10 pieces of cosmetic gear
Buy 1 piece of cosmetic gear
Kill 50 Cone troopers using Meteor Slam
Kill 100 Cone Troopers
Pick up Rocket Shoes 5 times
Kill a Cone Trooper using deflect
Pick up a Magnet 10 times
Kill 10 Cone troopers using Meteor Slam
10,000 Meters Ran
100,000 Meters Ran
Reach 3000 meters in a single game
Pick up third set of Sacred Armour
Pick up second set of Sacred Armour
Reach 1000 meters in a single game
Pick up first set of Sacred Armour
Kill a Cone Trooper
1,000,000 Meters Ran
Pick up a Magnet 250 times
Kill 1000 Cone Troopers using deflect