Controls:

WASD - Move,

Space - Shoot,

Q/E - Cycle Weapons

Modifications from Original:

- New audio and visual effects for various events in the game

- New weapon: Laser, does more damage and travels faster

- Weapons no longer get overriden when you pick up a new one; the game remembers how many of each weapon you have and you can swap between them

- Score and highscore counter

- Game over screen

- The Skeleton (don't hit it, or else......)