Cheers Snurty! As you say, it's not very likely to win awards but as a first game, it's well made! Although simple, it's entertaining and can keep one well busy for more than a few minutes.
However, I've got two remarks. The first is more of a flaw from Fenix, I guess. When I exit the game and gpmenu2x reloads, the screen becomes a kind of interlaced, the horizontal lines are vibrating. When I exit the menu to the gp2x gui, display is fine. But when I restart gp2xmenu the screen is still interlaced.
The second remark is that when I reach a level's goal, it takes some time before the game reacts on it, as if all elevators must reach a certain position or finish a cycle or something like that. I would expect an immediate reaction from the game.
Keep on going Snurty, I'm sure we'll see more of you!