A common mistake many people did was to buy the launcher upgrades rather than parachutes and E-rockets.
It is a high priority to acquire those accessories to earn as much as you can before day 5.
My best so far, 192950.
Set autofire on and use my right hand to control the ship while ignoring mouse control altogether. Just concentrate on getting the powerups and survival.
A minor complain, repair armor/weapon should not degrade the overall durability since money are hard to come by, especially in the early levels.
Not a bad game overall, 3/5.
Hate to complain, but a restart from the beginning without having to refresh the browser is what need the most, else, having a save and load function at the end of each day would be nice.