Already played this game before, so I'll just say what comes to mind.
-Seems like enemy spotting the player sounds aren't based on position. So it caught me off guard and made me wheel around to look for enemies, where instead he was off in the distance in front of me.
-A little odd how you need to press E to pick up ammo, but you automatically eat food for health.
-I crashed and got flung off the boat, which is cool intended or otherwise.
-Sea monkeys jumping out is really fun enemy idea.
-Teaching the player that the game has rocket jumping by putting a prize above the thumper is nice.
-I somehow have 3 hands? Don't know how, I think I was switching weapons while reloading on the boat.
-Underwater tunnel is cool. But I can't see anything, I basically had to hug the wall and hope it was a straight line.
-Purple wizard encounter, I rocket jumped out of the hole, which made it easier to beat him obviously. Intended? I think it was cool to do that. Afterwards though, I notice that in one corner the terrain lets you just jump up it instead to leave the pit. Eh.
-At that encounter, I managed to wedge my Boat. No matter which speed or direction I do, I can't get unstuck. Sad. Was going to load my game, but I first wanted to check out what was ahead. Oops. now it saved over and I have no boat, and there's only one save slot.
-Good thing I pressed on, it was the final boss. I like the fight, having an aggressive guy who chases you down is a bit more fun than strafing a wizard. Wonder if my character will somehow make it out alright with no boat.
Big improvement on last time, keep up the good work.