Minimum damage inflicted by mobs is 1 except with evasion.
Elemental damage added by weapons is not modified by any buff or when using a damage skill. It's a fix number, only decreased/increased by monster resistance to corresponding resistance.
You can trigger traps without taking damage if you use charge.
Prices are higher in Free Town, meaning you can sell your items higher there.
You can bodyblock mobs using obstacles such as doors. Because of mobs collision, if you knockback a monster, it will push back all others monsters behind it.
You can clear mobs stuck behind obstacles with ranged weapon or aoe skill (whirlwind/charge).
Your companion revive with 50% health everytime he dies if there is no nearby ennemies where your companion died (not based on your hero location).
Your companion can detect traps even if he isnt nearby or dead.
If you didn't have any aggro (they hit you first or you did some damage to them) on mobs your companion pulled, if your companion dies, mobs won't attack you unless you are in their aggro range the moment your companion dies.
Extra recovery costs 3 skill points, while medium hp pots cost 220 gold and can be spammed as you want.
You can use recovery as soon as ennemy is out of the screen.
You'll never get hit if you keep moving in the same direction while kiting.
If using a 2 handed weapon (greatsword, bow etc), you can still equip a shield to free one slot in inventory. I also put 2 rings I might need on my companion so I can swap when I want (fire/toxic resistance rings mostly) without using any inventory slot.