Thanks for playing! I'll get to the bugs as soon as the voting period ends.
The general vibe of the game is to try things out, discover via trial-and-error. I'll think of ways to "nudge" the player towards objectives (I.e.: establish that plants are useful), but I don't want to outright state what the steps are. To attach the nose cone, you need to slather some glue on the ship first, to use the Raygun, you hold down left click and release after charging it for a few seconds..