Game: Play Bullet Heaven, a free online game on Kongregate

Always get S rank
24 ?? 68 8c 04
24 08 68 8c 04

Don't lose hp
60 d9 05 93
60 d9 05 02

No hit penalty (but hp will decrease)
66 ba 04 c0 d6
66 ba 04 02 d6

Infinite bombs
66 f4 04 c1
66 f4 04 02

Shoot to kill
5e d9 05 60 d9 05 d1 a1 68 d9 05 f0 86 01 60 b8 0a 60 01 87
5e d9 05 24 00 02 02 02 68 d9 05 f0 86 01 60 b8 0a 60 01 87

Bullets penetrate
60 83 04 4f ee 05 00 f0 4c 5d fa 03 4f fa 03 00
60 83 04 4f ee 05 00 f0 4c 10 03 00 00 02 02 02

Always max charges
0e 09 00 00 5e ef 05 60 df 05 68 ef 05 f0 ba 01 60 da 05 60 df 05 0e 09 00 00
0e 00 00 00 5e ef 05 60 df 05 68 ef 05 f0 ba 01 60 da 05 60 df 05 0e 00 00 00

Free upgrades & can always upgrade
0f 7b 00 00 f0 48 5e b5 02 60 b5 02 5d 02 d1 66 98 0c 46 02 01
0f 00 00 00 f0 48 5e b5 02 60 b5 02 24 00 02 02 02 02 02 02 02

Stats don't submit (anti-Kong highscore method, I'm not 100% sure it works...)
5d1 66 b2 0d 2c e0 1c 60 97 04 a0 60 b8 0a 60 ec 01 87
10 1b 00 00 2c e0 1c 60 97 04 a0 60 b8 0a 60 ec 01 87

Bullet Spread 0
24 01 68 ea 05
24 00 68 ea 05
Change 00 to anything for more bullet spread

Really fast
24 0c 68 bf 05
24 6a 68 bf 05

Really strong magnet
24 00 68 e6 05
24 6a 68 e6 05

Every picked up coin is worth 127
24 ?? 68 2f 5d 8f 0c
24 7f 68 2f 5d 8f 0c

Credits go to various people