In case you're having trouble with damage control in Hot Balloon mini game, the total of your Int and Will determine the damage you receive, while Str determines the damage you inflict
[Video: http://youtu.be/GvLKfkgqBkE?t=1m7s]
Back to back damage comparison with sum of about 300 (my alt) vs 900 (myself)
note: my alt fail in that run (gasp, spoiler!), but she passed on the second try
If you have about 200 Str, you should be able to take down flying buggers with single shot, so try to shoot down as much as you can coming head-on and whatever you can reach on your left hand side (I got away without moving other turret)