Got 59,800, Performance Breakdown:

Core Basics 19/20

Intermediate 17/20

Advanced 19/20

Expert 14/20

Grandmaster 12/20

I guess, it's not too bad for a non-native speaker.

Minor feedback:

1. The correct answer for "Lethargic" is "Affected by lethargy". I think, definitions should not use words that share common root with the defined word, because:

a. it makes guessing too easy

b. it basically becomes a circular definition which is meaningless

2. Options almost always include 1 correct answer, 1 direct opposite and 2 completely random. Once you learn to recognise it, you can easily rule out 2 random options and have a 50/50 guess.

I also felt the definition of lethargic was kind of silly, especially since I had already gotten lethargy as a word in tier 1.