Some notes:
Boxing's NPC initially starts with 2 HP, and gains 1 after every 3 rounds. If said NPC was in the middle of the ring while at 0 HP, he gets knocked to the side in 1 hit. That is ~2 seconds slower than having him knock you back once, then get beaten up until the end. After 10 rounds this is not needed anymore since he gets to the side with 0 HP at the end.
Chef and Fire are the ones that can be autofired for the entire time in Classic. A bot is still preferably than a very large input file when testing however.
Fire can have up to 7 stickmen hopping at one time. It doesn't appear any significantly fast to obtain n1,000 points.
Fire (Modern) has NPCs that spawn depends on points. For example, freezing my score to 18 spawns an egg every time, but freezing it and changing to 18 doesn't. Also gives a debug screen if score set to "270F".
Rainshower takes
20:49.52 to get to 1,000 points yet after
06:17.52 it reaches 2,000 points. Reach 1,300 points triggers the "x2" points jingle, but doesn't increase the multiplier to x4. Also the sunny days from every 100 points never appear after 1,000 points.