On assessment day 2 you initially do a situational judgement test first. Its straight forward enough and don't over think it. Around 25 questions where you are giving the situation then told what action you have taken. You then answer if the action makes the situation better or worse.
You then do a concentration and reaction test where by you watch a screen for 30 minutes. A small grey box appears in the centre at random times and everytime it is black you press the button.
The next one is the observational assessment. A busy scene appears on your screen for 0.8 seconds and you then have to noted what's in it. Think there were maybe 12 to do. This for me was the hardest.
The last one is the coordination test. You guide a ball around a track a number of times using two joystick, which are highly sensitive.
All being well you will find out your results within 10-20 min. Its then onto the MMI interview. You are given 6 questions and write down a sentence for each. You are then interviewed about each question. I found this informal and much more relaxed than DMI, mainly due to knowing what you were going to be asked and could prepare for a short time before going into interview.