you can do that with a little state machine and timer Event handler. maybe not easier, but more understandable code.

var state = 0

timer.period[0] = 100

onevent button.forward
state = 1

onevent timer0
if state == 1 then
# Thymio drives forward with a target speed of 200 for 1 second
# insert your code here
state = 2
end
if state == 2 then
# Thymio turns 90 degrees
# insert your code here
state = 3
end
if state == 3 then
# Thymio drives forward with a target speed of 300 for 2 second while Led on top is green
# insert your code here
state = 4
end
if state == 4 then
# Thymio turns left for 1 second while playing a sound
# insert your code here
# Thymio stop
end

regards
Michael Kany

Would there be a reasonable way to get Thymio to do the following using code?

Thymio drives forward with a target speed of 200 for 1 second
Then..
Thymio turns 90 degrees
Then
Thymio drives forward with a target speed of 300 for 2 second while Led on top is green
Then
Thymio turns left for 1 second while playing a sound