You have 2 » 4 » 6 Regeneration for each Ammo item you have.

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

When you use a Weapon, it gains +2% » +4% » +6% » +8% Crit Chance for the fight.

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

While you have more than half Health, your Weapons have +25 » +50 Damage.

At the start of each fight, deal Damage equal to 15% » 30% of your enemy's Max Health.

Your leftmost Ammo item has +1 » +2 » +3 » +4 Max Ammo.

When you use a non-weapon item, Burn 1 » 2 » 3 and Poison 1 » 2 » 3.

When you win a fight against a player, gain 2 » 3 » 4 » 5 gold.

When you buy a Weapon, permanently gain 20 » 30 » 40 » 50 Max Health.

Your items have +2% » +3% Crit Chance for each Weapon you have.