You will use the W, A, S, D keys to move through the dungeon, and when enemies are near you, your character will shoot arrows at them automatically, so position yourself to take them down.
You will encounter waves of enemies that you have to defeat, but before each wave, there is a treasure chest to open, from where you pick the kind of upgrade you want to use for that wave.
You might get protective shields, you can improve the speed of your attack, its range, and other statistics, which is why we hope you improve yourself a lot the more you play.
Also, you have a limited health bar that does not get replenished that often, so try avoiding attacks as much as possible, because if it reaches 0, you lose. Good luck with your adventure, and have fun!