
Really a great engine, but I ran into a few problems I had with the engine(might be my own fault):
-crashing, on single player maps on conscript, it will sometimes crash when I fire a weapon, or just on a new map load. Does not happen on any other engine for psp. I just tried another map, with stock quake, I took a screenshot, tried to fire a weapon, and it just crashed...
-hl1 bsp, although I was able to load some pretty awesome hl1 maps that had internal textures at full fps, I did run into some problems with others... EVERYTHING in the map is using the palette or whatever for the textures. Maybe this is because it required another wad(MOSTLY had internal textures on map, but none showed.
-I cannot get the music player working no matter what, I renamed the name of the song, even in the advanced settings too. I put in the mod's folder, in a folder named music. then I tried in a folder named "music folder". I tried cd play, cd next, nothing.

A few features you should add to your engine is:
-external texture support. Ability to put a tga with the same name as a model, full color
-better particles. I fell in love with d-quake's shadows and particles.
-hl1 mdl support, that would really be great for a psp engine. Dquake has hl1 mdl, but the animation frame code is not properly made yet.