Hello Allana, how are you?
The cryptics are giving us a run for our money, with both the Colossus and the Holiday providing quite daunting challenges. (At least, I think so.)
45A Ideal must end up being acted out
- end up (upside down, topsy turvy = anagram) of ideal must = SIMULATED = being acted out.
2D Atmosphere improved when rescued by helicopter
- AIR (atmosphere) LIFTED (improved) = AIRLIFTED = rescued by helicopter.
Yell out if you have any more trouble!