It's true the OC section of destroyer is much hard compared to the actual DAT. So don't be discouraged because of the low score. Why bother then? Definitely it is worth investing your time because the reagents and reaction formats are quite similar to what is actually on the DAT.
And yes, try to be familiarize yourself with the road maps. It's a must and you will see why I say so when you sit for the test. Good Luck!
