Here's a small little instruction guide I made for this game, in case you don't know what keys do what.

Arrow Keys:
Left/Right - Run left or right
Up - Jump up (If you're holding left or right and you tap this, you'll jump ahead instead of up, this will be important to use)/Block a sword blow
Down - Crouch (If you hold crouch and tap left/right, you'll do a crouching hop in that direction)

Shift - Walk (hold while tapping left/right to walk, do this when crossing spikes in the floor)/Attack with sword

If you have a question about the game, ask in the forum!