On an individual basis, here's my fastest times for each level (separate runs) after playing for an hour or so. I wish I could provide video but my laptop lags like crazy when I try to record so just screenshots sadly.
Level 1:
Level 2:
Level 3:
Level 4:
Level 5:
Level 6:
My fastest overall times (in order) are:
1:34 - 0 deaths
1:36 - 0 deaths
1:42 - 1 death
1:50 - 2 deaths
1:58 - 2 deaths
2:12 - 4 deaths