While playing Seasonal Slots, if you spin three "bonus" icons (pictured below), you will be given four free spins. During those free spins, if you spin three more bonus icons you will be awarded more free spins and this trophy will unlock. You can bet the minimum 250 chips per spin and use the Auto Spins to hopefully speed up the process.

A Big Win occurs when you win back a substantial more amount of chips than you bet (usually 4x). This is completely luck-based, and it doesn't take into account the amount of chips you wager. You should go for this while going for  All Seasons. Set the bet to 250, and leave the Auto Spins on until you get a Big Win. Do this for two seasons and the trophy will unlock.

Every season of the year, the Seasonal Slots machine will have a different look. This trophy is unlocked for playing the slot machine in all four season variants of the slot machine. This trophy will take about a year to unlock.

The slot machine will change themes around these dates:  Spring - March 20 Summer - June 21 Fall - September 23 Winter - December 20

Make sure you keep track of which themes you have already played, and make sure to play a few spins just to make sure it counts. This trophy is very similar to  Change in Seasons, which requires you to get a Big Win on two seasons.