Tesla Force

As the descriptions for these two achievements say, you need to collect a certain amount of these items in a single run. Both crystals and energy cells are random drops from enemies, in general. It is pretty likely that both achievements will happen naturally during your successful run (i.e. when you make it to and defeat the boss) of either the second or third chapter. In particular, the 100 crystals will likely happen in your run to get Crimson King (100G), especially if you also progress to the boss and beat it. There are, however, a couple things you can do to improve your odds of getting each achievement:
 

• For energy cells, prioritize 'Fix the Inhibitor' levels. Repairing the Inhibitor at the end always drops 5+ energy cells, and so doing a handful of those levels in a run can really boost your total
• Also for energy cells, equip the perk from the Research machine in the hub to get +3 energy cells for every level you complete
• For crystals, prioritize 'Destroy the Statues' and 'Elite Monster' levels. All statues you destroy give guaranteed crystal drops, and killing an Elite Monster gives a bunch of guaranteed crystal drops. Map out your route to go to each Elite Monster level through as many 'Destroy the Statues' levels as possible.

The only other bit of advice is to obviously attempt these on the third chapter, since it's the longest/has the most levels, increasing your chances of getting enough of each.