It's an arcade-style 2d side-scrolling adventure that resembles old amiga days of Shadow of the beast.

Instructions:

controls:
arrows / WASD - move, jump, crouch
x, space - fire
h - potion
down arrow - shop

game tips:
- running is faster down the slopes, slower up the slopes
- you can shop when close to the old man (to shop, crouch)
- you can drink potions to regain a portion of health
- you need keys to open chests

- when shooting, timing is the key
- almost each enemy regenerates health over time.
- killing multiple enemies in a short time makes you enraged for a short
time: you shoot faster and regenerate some health
- you gain experience with each kill; you gain better weapon with a levelup.