I was amazed at how hard this is, kept getting 0 points even though I though I'm a reasonably fast typer... Only after reading the comments did I realise you can just write 1 2 3 4 etc. instead of one two three four... :D
Woo, 82!!! I worked in retail as a teenager and entered product numbers into the register using the numpad. For this I hit the tens digit with the left hand on the number row above the letters and then hit the units digit on the numpad with my right hand.
15 seconds: 59
30 seconds: 134
45 seconds: 180
1 minute: 148
2 minutes: 356
It wouldn't make sense to count backwards
(I got to 48, not bad)
I got to 44 and I felt exhausted. And I'm a fast-typer (or I think I am)