1. MOVEMENT

.use W,A,S,D to move around and press THE SPACE BAR to skip a move and let the enemies move without you moving.

2. Combat

.move towards your enemies to attack them, if you are a ranged character (archer, pyromaniac, mage etc) you do not need to be next to the enemy to attack but still have to move towards the enemy.
. do not move through doors if an enemy is directly in front of them, wait until the enemy is 1 block to the side of the door and then move through so that you can attack first without the enemy hitting you

3. don't worry about losing your characters from dying

. unless permadeath is active, when your characters die they are simply put on a cool down of around 5-15 minutes but you can still use another character if you want to

4. coins are universal and shared between all characters

5. choose the class that suits your playstyle and the one you like the most (I play as an archer and it is very good to attack from 5 tiles away)

I hope that these tips and info helped you!