Phases I (grammar test) and II (editing test) were okay, but it took a bit long to review my tests. The first two phases of tests were not very difficult. One just has to be meticulous.

A multiple choice language test, then an editing test. The editing test is really rough English. Then an interview where the interviewer talks about stuff you got wrong/could have done better in the test. Then, another editing test of similar level English. I got an offer after this.