Got 100% on everything except maybe the first secret level. The magnifier makes finding secrets a breeze.
Spent another hour looking for a secret on the last level. Eventually had to watch a youtube walkthrough. I missed the blue keycard that the cat drops.
My score was 9133370

Good job! I should go back and give it a playthrough again sometime.

i should get around to playing it

I would play it if it wasnt for that ugly original dos keyboard only, non-remapable keys setting.

If you gift me a copy of Blake stone i will. ; )

I just completed the game, but I'm also slightly incomplete on secrets.

I'm 100% on the 20 regular levels, and 100% on the first three secret levels, but can't figure out what's missing on the last secret level (19).

I played it once and got to something like 95% complete. Then I reloaded a saved game and only got to 80%. And I've been looking and looking all over Secret Level 19. Any ideas? Perhaps some of those one-way doors that mutants pop out of are bugged and some mutants are locked up there forever.

I'm still making my way through Aliens of Gold, I've just completed episode 2, that Acid Dragon was tough.

I also just finished Planet Strike. On easy... With only four million points, 83% mission rating and one secret level found. But I had fun too...

I liked Planet Strike more than Aliens of Gold. A boss battle each fifth level keeps things a little bit more interesting, and the automap feature really helped.