A nice, medium-sized map in a classic style. I really liked it. In normal mode, it's easy and fun to complete. It's not too difficult, except for the final battle, where I ALWAYS run out of ammo and health (perhaps the solution could be to create an escape route to return to the center of the map to collect more ammo, or have it regenerate automatically). The only drawbacks I've seen (1 hour of gameplay) are that the secrets are diabolically hidden. Man, only a madman would find the way!
The detail of the "prize" for the player of being able to obtain the source code by collecting the keys to a puzzle seemed original and fun. I don't usually make levels, but I participated in the challenge.
Thanks for it.