I've played this to death now and noticed a few things, hope this helps:
Keep a slow pace! The platform 'spawns' are calculated based on your speed - meaning there will never be a platform that is unreachable at your current speed. Obviously if you hit a crate after the platform has spawned there's a chance you won't have the pace to make it but by keeping a low pace all the time you reduce that risk significantly. Crates near the start of a building give you a good chance to build speed back up before the next jump anyway, so hit them when possible - just avoid double crates.
Don't jump further than you need to! If you aim to land on the first few centimetres of each platform you make windows and falling grinders much less of a problem. Grinders seem to fall exactly in the middle of their platforms, so by landing early you have a better chance of getting over them and back to solid ground in time for your next jump.
So much negativity -_-
The game isn't impossible; the difficulty is pretty reasonable. The bad part is if you mess up and still complete a level, you have no chance on the next one, since it auto-saves in the only save slot.
The controls are chaotic at best; it'd really benefit from control groups like most RTS games have.
Who the hell cares about it being 'realistic'?! It's set on another planet fighting bugs. Swords don't set buildings on fire but people still liked Age of Empires.
Overall I think it's a good game, could be great if it's remade with a bit more to do... and a fast forward button pleeeeeeeease.