Well:
I know i have been an ass about BOA:3, as you used something i gave to you for the game without crediting me(the heart, i think). And i appologize. So here is some fare feedback for BOA4.
Gameplay-The gameplay was ok, but it wasn't that awesome, it seemed to lag a bit even in low quality. I'll just assume thats my systems specs, but i'll mention it doesn't happen very often on any flashes. Aslo, the controls were kind of bad, i hated the WASD+space to throw a nade, sure they are close keys, but they feel awkward. The mouse aiming was pretty nice though.
Graphics- Not to impressive, considering you had that artist who did that short animation on your side. The graphics were pretty bad, and the blood was worse. The thing that stuck out the most was the out of place character. The character didn't blend at all, but from past experiance, i happen to know that YOU do the main character in almost every game.
Sound- Annoying, all of the monsters had some annnoying scream that really made me want to turn off the speakers.
Level Design- They were pretty good, but i hate the sidescroll thing you have been doing ever since the third one. Remember the classic screen by screen ones in #1 and #2? Those were awesome, and they were easy to run, so there was no lag at all in the first two. The only real level i appreciated in this game was the underwater ones, with shark forms of the enemys. That was badass.
I really wish you would have stayed on task, and with a better story man. This is getting kind of bad, maybe you will clean up for BOA5. Wich i know you are going to do ;)
Anyways, my overall score..6/10. Not that bad, i guess.
-Supercompnerd