10 Metroids remain. Resorted to consulting a guide to find the 27th. It was in a location I thought I cleared. The forced backtracking for the three metroids in areas 4&5 is annoying.
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Zetas are such bastards I felt the need to look up a strategy, same for the queen. I forgot about how her stun mechanics worked and had to make several attempts.
Time: 2:30
Missiles: 190