The stat achievements such as collect stars, kill enemies, rescure VIPs and friends, are not saved via Steam cloud. I had to deal with this problem since I played on 2 diifferent PCs. So if you plan on playing on a different PC, you will need Steam Cloud and the Registry. Check out Ghost's excellent guide and easy to follow video guide at the link provided, courtesy of Thirganor.

Oprindeligt skrevet af thirganor:

I would also add a hint regarding the fact that the stats are not saved into the steam cloud, as you already mentioned it because you were playing on 2 different machines.
As the developer already clarified, those infos are stored in regsitry... See the info from "grep" who wrote where they are stored: http://gtm.steamproxy.vip/app/355050/discussions/0/530647080133091723/
He made a small tuto about it.

Earn 10 Medals
See Fidelity Medallion.

Earn 50 Medals.
See Fidelity Medallion.

Earn 100 Medals.
There are 108 medals in the game so you can skip the ones giving you problems. I didn't get the last 4 medals on stage 8 and 9. This isn't that hard to obtain.

Rescue 100 People.
See I Kind Of Like It Back There.

Rescue 500 People.
See I Kind Of Like It Back There.

Rescue 1,000 people.
Hover over a person and pick him up, now do it 999 more times.

Collect all the stars on Stage 3.
This is easier to get with a co op buddy. Maxing out the Star Magnet also helps out a lot.

Save 5 power-up at the end of a stage.
Just save a 5 of any power-ups, lasers, shields and mega bombs.

Destroy a Lighthouse without touching it.
You have to destroy an enemy unit, and the explosion hits the lighthouse and blows it up.

Use any 5 power-ups in a single game.
Just use a total of 5 power-ups. Shields, lasers, and mega bombs.

Destroy 1,000 enemies.
See A Really Nice Pat On Your Back.

Destroy 2,500 enemies.
See A Really Nice Pat On Your Back.

Destroy 10,000 enemies.
This will come from regular play.

Save 20,000 stars in your bank.
This will come faster once you get the card that doubles your Stars that you collected.

Collect 100,000 stars,
This will come faster once you get the card that doubles your Stars that you collected.

Collect 200,000 stars.
This will come faster once you get the card that doubles your Stars that you collected.

Use 3 different power-ups in a single game.
Use a shield, laser, and a mega bomb and the achievement is yours.

Ram through an enemy wave with your Energy Shield.
When you see a group of yellow plains, just use a shield and fly through them.

Destroy at least 15 enemies with one Mega Bomb.
This was done on Stage 8.

Burn through 10 enemies with your laser.
Here's a video showing how I did it on Level 8.

Finish a stage with your health lower than 5%.
This one is not hard if you are actively going for it.
Note: There is a card that gives you health regeneration, once you have this, the achievement can be much more difficult to get. The cards are pretty rare but I advise knocking this achievement out early.

Rescue your friends 20 times.
For this one, you need people on your friends list who play the game. When someone on your friend list dies on a level, you can rescue thier picture by hovering over it. The more friends you have that play this game, the higher the chance is that you will see thier picture in a level. Also, always play the tournament when they have them, I got a lot of rescued friends from the tournament levels.

If you need friends please refer to this discussion page. Leave a comment and add some friends.
http://gtm.steamproxy.vip/app/355050/discussions/0/613956964587510106/

Feel free to add me, and message me about this achievement. I do the occasional "Death run" upon request. That's where I play every level and die as soon as possible. The people I did do this with, told me that I only appear on some levels, despite dying at the beginning on all levels.

Rescue 5 VIPs.
UPDATE:: I have now Rescured 5 VIPS, this took me 5 weeks of just checking in on the game to see if a VIP mission popped up. rocket56 confirmed that V.I.Ps DO show up on week days.

Destroy all enemy towers on Stage 5.
For this one, I recommend you fly in circles to advoid the EMP. At first this might seem hard but it's not. Just fly in circles and shoot all the towers. Do this one on normal dificulty so that the towers take less hits.

Find all 24 cards.
This will come with regular play, the drop randomly.

Oprindeligt skrevet af Zulgarr:

Great guide!! Just a note for the House of Cards that's not in the guide and I haven't seen in any of the comments....Cards seem to drop much more frequently the higher the difficulty (I know it kind of seems obvious), especially on Insane levels and later levels (starting at lvl 4 and not including lvl 5). Just a tip for anyone looking for more card drops.

Complete Stage 8 without using any power-ups.
Do this on Normal Dificulty.

Enter the tournament.
Simply enter the tournament when it's open.