To win combat in Lost in Random, you will need to play cards. To play cards, you will need to get Dice Crystals that will power up Dicey. Dice Crystals can only be obtained during combat, and you cannot carry Dice Crystals from one combat to another.
There are two ways to get Dice Crystals while in combat. The first method requires you pay attention to the glowing blue crystal that appears on enemies during engagements. You will need to attack this with your slingshot or some other weapon. Alternatively, you can Blink Dash, which will reward you with crystals.
Related: How to get cards in Lost in Random
When you strike an enemy's crystal, it will release Dice Energy that falls to the ground. You can either run to the energy to pick it up, or command Dicey to go and retrieve it. Once you strike an enemy's crystal, it will regrow after a certain amount of time. The crystal's location can change, but each enemy has certain spots it will spawn on.
The other option to get Dice Energy is to Blink Dash through enemies. Normal dashing will not give you energy. To Blink Dash, simply wait for an opponent to strike and simply dash through them just before they attack. This will prevent you from taking damage and automatically give you Dice Energy. It's also a great way to make enemies attack one another if they are grouped together.