Current high score in 1.5 Maniac, 810,491,881. Really good from stages 2 to 4. Stage 5 has an annoying death which doesn't cut that much from the stage score though. However the end bonus is lowered a lot due to it since I end up not having enough bombs for a clean Larsa victory. I think this route could carry up to 850M but then a lot depends on getting the full end game bonus. Not really sure where I should improve it either.
