This isn't a "really good game". This is poorly designed , eye cancerous , way too easy and there hasn't been any work put into it because it's two rooms big.
All have opinions, I gave mine, and I wonder why instead of criticizing his game and my opinions you give some ideas? If you dont like the game, just dont comment or just leave a opinion of what should he have to do in the game, not only say than "This is poorly designed , eye cancerous [...]", basically you are saying than this is crap ¿What kind of opinion is that? Its unhelpful.
Thats my opinion. 
I never said your opinion was wrong or criticsized it. Don't tell me my opinions are wrong and unhelpful, if he wants to make a good game he should clear whats wrong with it. Which is what I said. They're the ideas. Don't tell me what to do I can comment if I like. I told him what's wrong with it. The game's colours are too bright , the music is too loud , it's badly designed (It almost basically copied the original engine) , it's too easy for an iwbtg fangame I finished it in one life and it looks like he spent about 2 hours work on it.
He should:
Change the colours so they are still original but not so bright , quieten the music (You can't hear any sound effects) , get rid of the unoriginal traps , clean up the scruffy animation , make his rooms fresh and not using the engine rooms as a base (The rooms were ther eot show the capability of the engine , not for people to cheaply edit and call a game) , make the gme so it has some sort of challenge even if it is still considered easy and make it longer.
Do all that and he'll mke his game a lot better. He should also read this
http://kayin.pyoko.org/iwbtg/forums/index.php?topic=9717.45My opinion is that you shouldn't give people lectures on stuff you clearly misunderstood.
Also i agree with チェーンソー in that he should learn some game make before attmepting a game.