This game is so glitchy, i went to lvl 9 and it didnt let me buy a tier 4 gun. Then i unlocked it with coins and then bought it and it didnt apear in my inventory.
(nice and good upgrades to get)
1. 50%+ health
2. (for me) 50%+ health
3. no hunger pain
4. 50%- mine damage
5. metal heals you (don't miss this one)
6. mega vacuum
i hope this works for you :D
+ if you like this or it worked
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