EDIT: 325,390 - level V
Have fun running between indestructible monster generators in a small hallway on level U! I second the advice of saving your bombs for the higher levels.
I actually kind of like this game. It's a bit slow in the early levels, and you can get all the powerups too soon, but... there's something about it. Maybe I just enjoy blasting the monsters to bits.
I find this version a lot more difficult than the 7800 or 2600 versions!
Couple of hints: don't use the key on Level A. The room that opens contains a shield and a silver chalice. You can get the shield on the very next level, and the silver chalice is only worth a few hundred points. Hold onto that key until you REALLY need it on the higher levels. As far as I can tell, this is the only key that is "optional", meaning it doesn't need to be used to exit the level on which it's found.
You can sometimes shoot through gaps between two bricks that only touch at a single corner. You have to be firing UPWARD to the left or right (it doesn't work if you're firing down), and you have to move your player as far into the corner as he will go. The enemy must also be in the corner on the opposite side. As long as you do this, you can kill enemies but they can't hurt you. Good for thinning out the enemies before you enter a room.
In the higher levels with indestructible spawners, you'll need to start using your bombs. (You did save some, right?) Detonate a bomb and then run. You may take a few hits, but it's better than fighting and getting swarmed by a bunch of reapers.
I think that mapping will become important as you reach levels T and above. There are so many indestructible spawners that taking a wrong turn and passing through these areas more than once may drain too much of your health. You'll need to know exactly where to go in order to survive.
Edited by graywest, Sun Jul 29, 2018 9:01 PM.