Talk:Odonata/@comment-24.160.41.39-20150912091308/@comment-86.16.57.37-20150913181437

Completing assassination missions (boss fights) will unlock new planets. If you beat the boss on Venus, you'll unlock Mars. Beat that boss and you'll get Jupiter, and then that boss will get you to Saturn. At that point you'll have access to the resources you need.

Make sure you get hold of the Serration, Hornet Strike and Pressure Point mods before moving on to higher level planets. These are the main damage increasing mods for your primary, secondary and melee weapons respectively. When I was starting out I found Jupiter and Saturn missions pretty difficult as I wasn't doing enough damage and kept getting overwhelmed by enemies because I couldn't kill them fast enough. Serration helped deal with that problem immensely.

Good places to try for getting your first Serration / Hornet Strike are the Apollodorus (survival) and Lares (defence) missions on Mercury. The enemies are low level and pretty easy to handle, and you can usually find a group to run with to make things even easier. The mods you want have a chance to appear as the reward for lasting 20 minutes or waves, depending on which mission type you're playing. At some point between 15 and 20 minutes/waves, you'll start to encounter the Scorpion enemies (Grineer women with swords and grappling hooks). They have a small chance to drop Serration as well.

I know I went a bit off topic there, but I thought I'd include some info I wish I had as a new player just in case it helps. Good luck!