When you Level Up, upgrade a Bronze » Silver-tier item.

If you have 5 or fewer items, your items have +10% » +20% » +30% » +40% Crit Chance.

The first time you fall below half Health each fight, Shield equal to 20% » 30% of your Max Health.

Your Weapons have +2 » +4 » +6 Damage and Shield items have +2 » +4 » +6 Shield for each Friend you have.

When you use a Friend, your Weapons gain 3 » 6 Damage for the fight.

Your large items have +25% » +50% Crit Chance

If you have exactly one Friend, reduce its and the Core's cooldown by 5% » 10% » 15%

When you use an item, your items gain 3% » 6% Crit Chance for the fight.

Your items have 100% less Crit Chance.

The first 5 » 10 times you Burn each fight, Charge 1 Shield item 1 second(s).

The first time you fall below half Health each fight, Shield equal to 2 » 3 » 4 times the Burn on your opponent.

The first time you use a Large item each fight, Haste 2 » 3 » 4 items for 3 second(s).

Your Burn items have +2 » +4 » +6 Burn.

Your Poison items have +2 » +4 » +6 Poison.

If you have a Vehicle, reduce your non-Vehicle items' cooldowns by 5% » 10%.

When you use an item with Burn, that item gains 1 » 2 » 3 Burn for the fight.

The first 3 » 6 » 9 times you use your rightmost item each fight, Charge 1 Freeze item 1 second(s).

The first 5 » 10 times you use The Core each fight, Slow 1 item(s) for 2 second(s).

The first time you Slow each fight, Freeze 1 item(s) for 2 » 3 » 4 second(s).

The first 5 » 10 times you Slow each fight, Charge 1 Poison item 1 second(s).

Your Shield items have +5% » +10% » +15% » +20% Crit Chance.

Your Weapons have +5% » +10% » +15% » +20% Crit Chance.