1: Turn On All Generators

They cost 15 sun tokens each. This will open the door after you've done 3 in each area but also end the round when you click on one.

2: Collect All Letters

For this find a number entry pad in the map and enter by shooting one of the following combos:

S: 01010011
Y: 01011001
N: 01001110
T: 01010100
H: 01001000
W: 01010111
A: 01000001
V: 01010110
E: 01000101

The combos are on all of the colored pillars in the map as well.
You then will have collected all 9 letters.

3: Place The Letters On The Billboard At The End Of The Map On The Wall

4: Get A Pack A Punched Gun

For this you will need to use a random power up generator in the map. Get lucky and you will receive a pack a punch drop. There is no pack a punch machine on the map. This is the only way to get one. It costs 25 sun tokens each time you spin for a random power up as well as it can only be done once per round. However, there are about 4 of these random generators on the map so you have a few chances. It is quite expensive.

5: Shoot The Glowing Spheres With A Pack A Punched Gun

I believe there are 4 of them. Shoot them to activate the spheres.

6: Kill 100 Zombies With The Purple Laser Trap

7: Buyable Ending At The Escape Pod 150 Sun Tokens