Day 1: "Alright this isn't that bad, fairly easy so far."
Day 2: "Still not that hard, just build guys as I get the Resources."
Day 3: "Alright so now they are underground, but as long as I start off with a line of flamethrowers and fill in the gaps with other weapons I am good."
Day 4: "These infected are so easy with a line of Repulsor's they are not even getting up to my men."
Day 5: "Wow this isn't that bad for a last Day, requires a bit more strategy bu OMGWTF IS THIS LAST WAVE OVER 1000 ENEMIES SCREEN FULL UNDERGROUND ENEMIES SPAM 1 SPAM 1"